Okay, if we're grading where we're putting most blame - of course it's on Gueye.
But to essentially say "that's all there is to it," is reductive. In my opinion.
I do think the red was an overreaction. I do think the mess that lead to the altercation could've been avoided. I do think Keane over-reacted, which then lead to Gueye's over-reaction to his over-reaction.
I'm not really sure why discussing the contributing factors deserves mockery.
Thing is mate, you could go through life apportioning blame in a similar fashion. If someone is randomly attacked in the street, "well, partly their fault - they should have stayed home"
Gana stormed over a fair distance and got in his face, after a spell - Keane pushed him on - that incident happens every game, granted, usually opposition player. Gana started it, and his response to slap him in his face puts all blame on him.
I can understand someone losing their rag in the moment, but the worst of it was Gana continuing after the red. If Pickford wasn't there, that likely becomes 2 red cards.