People mindlessly bash Riot to farm up votes.
No. People bash Riot because they keep dropping the ball with balance changes, even more than previous seasons. We can't go a single patch without at least 5 champions being nye-uncounterable and being extremely frustrating to play against. Champions now have almost all their weaknesses covered now, leaving very little to work with in game.
Let's have a look at their new champ releases, shall we:
: Broken, and Riot refuses to nerf as they are ignoring stats
: Arguably the single most broken champion they've ever let loose on Summoner's Rift.
: A support carry that is now better as a carry than an actual support, who possesses almost everything on a single kit.
: An assassin with what is essentially perma-stealth, spammable dashes, hard to dodge burst (thanks to E->Q) and 2 stuns; with one of them being a knockback that bursts even tanks. Obviously still extremely broken.
: A champion that promotes little to no actual gameplay to the point where a player hit Challenger with two accounts; which he played at the same time.
: Was an AP bruiser-assassin, now turned full AP assassin...he's never been balanced, and for good reason.
: An abuser of Glacial Augment and to an extent, a lil bit of on-hit still. Should have been more of clone deception character than LB or Shaco, but Riot just wanted a champ with more damage. Also, she's overbuffed, at least on her E and with her ultimate cooldown.
Still, arguably one of the more "fair" releases.
: A support assassin with 2 hard CC abilities, grey health regen, stealth and an ult that deals a ludicrous amount of damage that ignores shields and grants ~500 gold on average per kill, honestly a champion that was never going to work. Ended up further promoting running more damage-orientated champions in the bot lane, as opposed to actual supports.
: Single-handedly broke the game in terms of statistics. At one point she had over a 50% pick rate on Korea with a ~50.45% win rate, meaning she was picked almost every single game (thanks to ban rate as well) and winning more games than she was losing on average. Still, she's an ADC that deals mixed damage, kills tanks+squishies, has poke, has dueling power, has an invis that grants movement speed and a shield that is ridiculously overtuned that also functions as a dash.
She's the definition of "don't release me I was never a good idea".
: I don't need to explain why and how this monstrosity was a terrible idea as Riot has 200+ collective years of professional gameplay design under their belt.
I could have listed more but I think you get the point.
Riot also now has this bad habit where they overbuff champions and then completely forget about nerfing them:
all received buffs that really weren't needed as they were at least somewhat balanced, but then Worlds comes along and suddenly Riot turns on the overbuff machine.
Now we're here AFTER preseason and those champions still haven't had their buffs reverted, let alone any actual nerfs, and guess what, they're obliterating the games they're on. Woo big surprise!
Riot also likes to forget about certain champions such as:

Seriously, it's once in a blue moon that they ever do anything with these champions anymore. Hell, they're "reworking" Wukong and everything about the rework is terrible...
Ooh ooh, and what about this preseason/season where they added more RNG to the game and made dragons even more oppressive? Ooh, and what about their terrible jungle changes?
Are we supposed to just always say "Thank you Daddy Riot, please treat us like good boys and girls and give us your -insert whatever you want here-"?
Cause I sure as hell do not want to do that, as criticism exists for a reason and Riot deserves almost all the recent criticism they've been getting.
If Riot makes a terrible decision then players have every right to constantly post about it and complain. This isn't a fucking university scholarship where you have to censor yourself to get ahead, this is League of Legends. So I say let the "mindless" ranting and posting continue as every single player has a right to say what they want (excluding blatant toxicity).
Also, here's a fun fact, people don't make posts just to farm upvotes, they usually make those posts because they're genuinely concerned about something that's currently going on with the game. It's disgusting that "Gameplay" boards is being attempted to be converted into a budget university forum where you need to write peer-reviewed essays to even get through to pretentious manchildren who think they're engaging in intellectual discussions whenever they discuss the hows and whys of Riot giving a -5 movement speed nerf to Irelia.
Sorry, but this is not what a "Gameplay" board should be about. Constant criticism and venting is what it's all about, as that's how devs know what to change. That said, when the game IS good and when they DO make good decisions we see supportive posts, so it's not all "mindless" bashing of Riot at all, and that's a narrative you've chosen to gone with as now YOU'RE the one trying to farm upvotes since the "Gameplay" boards now directly supports your mindset and behaviour.
Oh, and the fact that most people consider you to be a troll is definitely not helping your case.