Having a favorite hero and looking forward to playing that hero more than others does not make you a one trick, but nice straw man.
The general disaster of this rework has more consequences besides that. I still enjoy other heroes, personally, but after what they did to Mercy I don’t have a lot of faith in Blizzard, and that makes me not want to invest any more energy into their game. I mean, I’m not a Tracer main, so what’s to say that every other hero I like isn’t going to get torn apart the way Mercy did?