she's not the only ridiculously strong champion due to her kit and her scaling, azir, jinx, yi, yasuo, ryze, and cass. also if you include stacking champions like veigar and nasus.
but i do very much agree that vayne is a disgustingly broken champion with minimum effort as an adc in general.
it's just funny, playing as her and versing her. like: imo i think she needs an entire rework or, yeah just change her ult's damage or her true damage to physical or even remove the stun. but with or without the stun she is still insane.
i also think this is just one of many examples of riot being lazy. she's been like this for ages. what the hell is wrong with riot sometimes?
tbh i just blame riot for poor champion design, they rework or nerf a lot of champs lately but not vayne and with her horrifying late game scaling. add a couple of items and she's just an absolute unstoppable monster to verse. i never really have many issues with other champions like this, just vayne frequently more and for worse points. - as in oh their vayne has like 2 kills and 10 deaths and 1 item... this will be easy, oh she killed me... wat.