call me tinfoil person, but in all my years vandiril never unlisted/removed a video. and ignores all questions WHY he did. who knows if that was riot asking him to remove this video because who knows why.
never forget, pbe is kept alive for no reason but "not enough resources" for nexus blitz/dominion.
Hammermancer18 votesI mean
I don't understand why the PBE exists separately when you could sorta easily have the test content in the normal client...
DuskDaUmbreon8 votesMostly so that gamebreaking bugs don't get pushed to live as often. That way if Riot accidentally fucks up the code (such as breaking nearly every passive and many abilities) it doesn't affect actual games.
It's useless for almost everything else, but it's at least decent for catching major errors.
Jennifer42010 voteswatch the video. its not decent.
Kazekiba6 votesIt caught the Le Blanc 600% AP Ratio on E bug and Neeko/Galio Q doing thousands of damage.
It caught MOST of Dark Star 
bugs that literally deleted games.
Icy Hot Shoto5 votesMeanwhile Rek'Sai was crashing LIVE servers if her ult hit terrain. Guess that wasn't a bug on pbe.
Not to mention all this "oh my god this is op this is so great holy shit i love this bug/scaling/ratio/item/champ it's so op" followed by "Riot why the fuck didn't you nerf/fix this when it was on pbe?" once it hits life servers...
All pbe is good for is for people to screw around and test skins. if a bug/champ isn't op to the point it's actually too busted, such as those champ bugs, they don't really get reported to be fixed. Remember the Lux and Nami ult bugs? People loved that, and I saw a few videos of people asking to NOT fix it because they thought it was great.
DuskDaUmbreon1 votesRek'sai hitting terrain isn't always that common though. It popped up faster in live because of the significantly larger population.
Sometimes thing just don't come up in time or frequently enough to be noteworthy. But generally it catches the more common disastrous bugs.
Cevrad2 votesYou do understand the port to live sometimes creates bugs that are fixed within a day? I don't see how something being a result of the port has anything to do with PBE...
3TWarrior1 votes600% ap is not a bug...that's a typo
Cevrad1 votesIt does alot to catch bugs, occasionally the port to live will create its own bugs, but overall it does a fantastic job. Vandril is just a gold player who whines alot. He used to be about showing interesting interactions in the game, but now noone respects him because he changed like Gbay did.
Sure they don't balance based on PBE for the most part because its hard to do so on 100 ping, but its just there to make sure that things function, which they do on live so I would assume that PBE is doing its job.
General Esdeath 1 votesI mean
I don't understand why the PBE exists separately when you could sorta easily have the test content in the normal client...
Bugs with new content can cause problems with pre-existing things.
For example, let's say we're making a new champion that copies the last spell used against it. I guarantee you, before this makes it to PBE, this champ will have a bug causing Sivir's spellshield to not work or Riven's E to have a lower cooldown or something weird.
Marshbouy10 votesI think riot has major issues when it comes to listening to feedback, especially in the report a bug department.
I'm not entirely sure it is the developers fault, though, as it is far more likely to be executive wanting to push out content/ignoring bugs in favor of new stuff.
FlashnFuse10 votesThe problem with bug reporting is that sometimes it can be difficult to trace down the route cause of a bug and fix it, and if the bug isn't too gamebreakingly bad they'll let it through to a live release.
The thing is, if a bug report doesn't have 100% reliable means of replicating a bug it can make it way more difficult to trace down that bug and squash it.
When Rakan was on PBE, there was a literal gamebreaking bug where if two Rakans ulted and ran into each other the game would immediately crash. They responded to that bug and fixed it very quickly because the repro steps were easily identifiable making the bug easier to track down and fix.
Kaisha4 votesThe excuses they give you are just that, excuses. They have no correlation to reality and are just made up on the spot to placate the masses. We don't have enough resources, it takes more time, we're balancing around pro (that last one is particularly funny, like pro has ever been remotely balanced...), its all just excuses.
They do what they want, how they want, when they want, and then just try to find a way to justify their incompetence.
Jennifer4203 votesand one of the main reasons for that is the LoL reddit. posted the same thing there, had 3 downvotes 20 seconds after i made my post.
doesnt matter what, they protect riot. and riot only cares about lol reddit frontpage
DuskDaUmbreon1 votesAh, yes, that's definitely the way to get people to agree with you and foster discussion - Call people who disagree with you Riot shills!
LazyW0lf1 votesPBE is kept alive so that it can be used as a second step in the development process. There should be an internal dev server that they can use for risky changes like changing or cleaning up code, then they push things to PBE as a collective unit and for users to find the bugs while the dev team works on other areas or has meetings. It's meant to kill two birds with one stone and keep the process moving along, while also not having to hire hundreds of bug testers.
Yes, unfortunately the PBE is not a place where all bugs are fixed because there are so many of them. There's always a priority list and if the devs can't reproduce the issue within 1-2 minutes, they'll move onto another bug in the list. It's up to the users to compile the bug report properly, which is why the PBE forums have a template to use and ask the user to be as specific as possible. They'll check off bugs from the list but keep priority bugs on their mind to sink more time into when they can spare it.
TL;DR: PBE is kept alive to help RIOT save time and money, while also keeping development moving. Not all bugs can be fixed quickly and devs rely on the users to compile a proper report, which does not always happen.