wanna know a secret: it's not better botlane wins, it's better support wins.
Botlane has too much power now, but most of the power coming from the ADC is at that 2 1/2 to 3 item spike. Until then, ADCs still have no agency in terms of lane phase or even early skirmishes. It's all the support. A good support can get a bad ADC to the point where they hit their 3 item spike and can win the teamfight off having that spike first (itself a problem). A good ADC with a bad support pretty much cannot lane unless they're a mega lane bully going against a weak early game ADC. Furthermore, the classes that are able to counter ADCs are still able to do so...in a vacuum. Even a fed ADC loses to most bruisers/assassins unless they play perfectly AND the melee fucks up. But the support has so much peel and CC and shielding that it totally takes away that weakness. Even if you halved ADC damage, the melee still loses because they did 0 damage regardless.
The problem is that for years, supports were wardbitches who were glorified minions and we all felt sorry for the downtrodden support mains. But we're a long way from that now, but we're still acting like botlane being too powerful is the fault of the ADC, rather than supports being overbuffed on every level.