Yeah absolutely. However, a huge portion of the game is driven by pro play. I'm not talking about our changes in reaction, I'm talking about actual regular player behavior. Azir's play rate spiked when he got buffed in 13.11. It then spiked again (at a somewhat similar magnitude) because he got picked in pro. Like, the act of Faker picking him almost had as much impact as 2% win rate of buffs.
So when the pro play meta was Jinx vs. Aphelios every game and a snoozefest tank vs. tank in top lane, it's incredibly easy for players to say, "See? The game is just all about whichever bot lane wins, top is useless." And while certainly that is directionally accurate, the degree to which that's true isn't. But from what I've seen of playoffs so far, the carriability of each role seems a lot more fair. And I expect that to trickle down to other players.
Outside of that, pro is also a decent indication of the game overall. It's certainly not identical to the game we all play at home. These players are more individually skilled and more coordinated. They also play a slower-paced game. But if they identify that investing in their top laner to carry is worth it when they weren't earlier in the year, it means we've made meaningful gains in that direction. It's certainly far, far better than feedback we can get anywhere else. If you wipe my memory force me to make changes based on what I can see in one day's research, I take pro play VoDs over Reddit and Twitter posts every time.