It's surely worth noting that we've averaged 2 goals conceded in the games since he's been dropped too, and so it's possible that the idea of him being entirely responsible for everything that was wrong may just have been a little bit silly and childlike in it's simplicity?
Think anyone who watched Everton under dyche could see where the major problem sat, it was Keane.
We conceded loads prior to Keane your right, that's under a different manager though ( a very bad one )
The coady/tarky partnership had 2 clean sheets in 4 games ( average 1 goal a game conceded ) and conceded 1 at Brighton without him.
I won't count Manchester city because the are the world's best team and it really didn't matter who we had.
I think most people, myself included got angry when he refused to drop Keane after so many bad displays, he came in and dropped coady almost instantly ( he was playing very poorly so desvered dropping ) however Keane was costing us every single week but he played about 12 games straight.
I really think if mina had come in a few weeks prior we'd already be safe now.