Pretty much like everyone else here, MC posts his positive preference to his speakers of choice (common). From comments I have read, it is his frequency and excitement for them which has ruffled some feathers.
No, what ruffles the feathers is Chuck's derision and condescension towards anyone who suggests that there are alternatives to his setup that may sound just as good or better (on this forum, anyway, I'm sure he's a nice guy in person). Most of Chuck's posts are intended to be abrasive. He enjoys being that guy for some reason. I wish he would drop that act. These forums would be a more friendly and useful place if he did.
His enthusiasm for the products he owns would still elicit calls of shill, though, but that would be a shortcoming of his critics.