To be as fair as possible to Bisping, I'd prostitute myself for what is probably a 7-figure commentator role.
UFC may be despised by a lot of former fighters, but they've been VERY good to Bisping. Some of his shilling is probably a genuine belief that he's been treated very well, and some of it is probably an effort to stay in their good graces.
But for Bisping's salary they could put a blow up doll of me on the UFC merch store right next to the hotdog brands and I'd still vehemently defend them.