Caitlyn is not ok in solo queue either. Do you think Riot would nerf a champion for that many patches just because of pros? Zac was a menace in solo queue to this is not just pro game stuff.
It's not ok to become this untouchable crit machine that can pump out more damage than an assassin and have enough range to hide behind a front line, have a built in dash, slow, prevent any sieging or advances towards you, and be untouchable by actual assassins that are meant to counter you. This is while she is able to maintain her almost untouchable status in lane to. She is a toxic champion and deserves every nerf she got.