I don't hate Vayne because she's "OP"
I hate Vayne because her playerbase is almost exclusively toxic gosu fanboys that think every time they get a kill it was a "Sick LCS Big Play" and feel the need to shit talk the enemy team.
Playing this champion well in anything below Diamond-Plat does not require any amount of skill besides knowing how to right click and press Q. Get it through your heads people.