Riot make the new ban system blind with duplicates in favor of time or some shit.
"WHAT THE FUCK SO MANY PEOPLE WILL JUST BAN THE SAME THINGS."
So there's too much to ban. But at the same time people will ban the same five-to-seven-ish champs and lose bans.
TL;DR: at bottom
I don't buy the argument that there are way too many broken OP champs, because if that was the case, bans wouldn't actually be an issue in the first place because I'd fight your OP with my OP and it would all be a moot point.
The real issue is that there still remains a priority of top bans (usually the really broken FotM champs at the time) and then there are bans that most players would like to make, usually for the sake of removing a strong lane counter or something that counters their team comp.
People got excited for 10 bans because they thought it meant they'd be able to ban away the OP champs that are just too good to leave alone and still have a couple bans to deal with their specific strategy and style. The way they've implemented the new ban system leaves you without any guarantee that the OPs are taken care of until it's too late, meaning you have to do one of a few things; risk facing a champ that is unfair to face regardless of your team comp or burn your ban on a FotM (not fun), leave the OPs unbanned in the hopes that you can pick it first (again leaving way too much to chance for most player's taste), or go ahead and ban what you want that specifically counters your champ/team comp and pray that you can outperform your opponent in the case they get one of the current OPs.
Now realistically those aren't terrible choices, but in terms of how it feels when strategizing and planning for the game ahead it is a major step in the wrong direction. It just sounds unfair, even if both teams are being treated equally, since it leaves a lot of the pick phase to dumb luck that you ban the right things and don't accidentally double ban everything.
That and it is a clearly inferior system to the one currently in use in the LCS, where it is instead a strategic and fair system instead of a potential clusterfuck of people accidentally double banning, dropping bans unintentionally, and not being able to tell what is going on clearly.
TL;DR: It's not about there being too many OPs to ban, it's about how awful the new ban system will feel, especially when compared to the clearly superior model of 10 bans used in pro play.
https://blog.plays.tv/wp-content/uploads/2017/04/nautilus.png
Nautical wisdom...
Something something it's just a joke in memes and games
There are a lot of things that people want to ban.
Many of those things overlap.
You could have a hate list of Yasuo, Ahri, Lee Sin, and Fizz. So do many other people. You want to have them banned, but you don't want to waste your ban because the enemy was planning to ban him too. But if you don't ban him, the enemy team might have chosen not to ban him so their first pick could pick one of those champs. So you're stuck with no good decision choice.
Because when your team has only 5 players and you don't see enemy team's bans, then both teams end up going through the checklist of "Most OP/unfun champions".
But what could I possibly know?
https://68.media.tumblr.com/9923b4686346800c740725df499bbb36/tumblr_ny3h9b2jEO1qjvkxgo1_500.gif
It's because there are some that are extremely high priority, and others people just end up dealing with. It makes no sense to make it ten bans when there's a decent chance it'll actually only be 5.
30 op champions with 5-8 really op champions
Yes, and it works like:
"Here's the list of OP champs in order of OP-ness: 
"
List is completely made up btw.
So if both teams agree on that list, they will both ban the first 5. As these are high priority OP champions, while the rest are lower priority. It doesn't take a scientist to figure it out.
I mean it's sort of like a mental tier list for people, go down the list for bans. Obviously popular bans are shared because people tend to have similar bans. The same champs will be banned because I don't know that you banned what I think should be banned.
