KK on BU vs fish

because the focus of this hand is on MP1 (who runs 50/2), not UTG+1. i think he still has KQo because anything he limps he doesn't fold to a raise or a 3bet. he actually "defends" his limps way more liberally than i thought in this hand. i learnt this in the 50+ hands after this one. his range is actually wayyyyyyyy wider than pairs and pretty ones.

those who advocate folding flop, what range are we assigning our MP1 raiser?

edit: first bit is directed at fatguy06