Vayne haters must secretly be....
Volibear mains. Or some other 'underpowered' champions that can 100-0 you by getting one damage item like black cleaver,( cough xin zhao, cough jarvan 4, cough wukong, cough renekton, cough pantheon) or Triforce (cough irelia, cough udyr, cough vi) and 4 tank items.
Seriously you wanna complain about something? Complain about how top lane J4 can completely take over the game at LCS level. Complain about how certain champion's kit synergize with itself way too much. (looking at you irelia and xin)
Look at xin's kit and look at vayne's kit. I'd trade my vayne ult for Xin's W all day every day. Both champions have a 3rd attack proc, but Vayne's is balanced. Why? Because she has to build attack speed for it! It's not just chilling in her kit. What does Xin have to build? Whatever he damn wants. Want some black cleaver with that gold? Sure! What some Spirit Visage to tank face? Why not? Are you still gonna wreck with nothing but levels and your own kit? Bet your bottom dollar! Can vayne 100-0 you with bortk and 4 tank items? No? oh man how op!!