Adc sucks now and will still suck after crit rework.
Reasons the game is too fast, and adc comes online way too slow compared to other classes (excluding Ezreal and Lucien) Let’s look at what It takes for each role to be online and ready item wise Bruiser - black cleaver or triforce Mage - ludens or morello Support - existence Tank - (laughing in conquerer) Assassin - duskblade Adc - stormrazor, infinity edge, rapid fire.
That’s why Adc blows. Every other role is online at 1 item. Adc needs 3 to go even.
Now yes, after 4 items Adc starts to become relevant, but games rarely go anywhere near 2 items let alone 4 before the game is decided. And it’s not like they become gods at that point, at 4 items they are slightly above every other champion.
Tl;dr Adc sucks ass due to lack of a decent rush item, and stormrazor is just a bandage.