Looks like Machine Man is having a polite disagreement with an original character that is completely fictitious and that no identification with actual persons (living or deceased) is intended or should be inferred. Definitely not some ass hole that just happened to pop up in the news again, like, a day after I finished drawing him or anything.
Totally unrelated note: When you're about to enter into a new creative partnership, maybe google the name of the person you're going to be working with. Like, yeah, someone calling you out online without getting your side of the story is pretty shitty, too, but maybe "I'm not on Twitter" will feel like a weak sauce argument when you work with a well known, not to mention proud, bigot. Not that that has anything to do with anything here or nothin'.