Mouse and keyboard player here and I do not want to play against controllers either. I would love input based matchmaking, except there still needs to be platform choice too because mouse and keyboard used on console can end up with aim assist and recoil reduction as well.
Aim assist does not make controller 'equal' to keyboard, it simply adds an imbalance and advantage for controller in certain situations.
Two wrongs do not make a right. This does NOT create any kind of parity.
The only fairness that can be given at this point is to allow PC players to opt out of cross play just like console players can.
It's an insulting console bias.