My perspective on bans is, that bans are a valuable part of the game. Banning adds to the game when it is part of the strategy that goes into picking champions and making out your team's composition.
Whenever "pick your champion" is an actual mini-game that you want to play successfully, that by it's very nature is against OTPs because OTPs don't "play" they just spam their 1 pick.
It feels shitty to make a ban because "riot buffed maokai and he's OP right now". It makes much more sense and fun to ban because "I want to run a carry toplane and Maokai just shuts that down." Because of how many tanks are there on top lane, making the good bans work relies on having reasonable information.
otherwise banning is just a lottery.