He's an active and vocal critic of the Alt-Right. He devoted an entire chapter of his book to criticism of the Alt-Right. Just what views of his would you cite as "Alt-Right?" Can you back those up with quotes? As far as I can tell, he's an amoral opportunist who will stoop to saying vile things, but he's not Alt-Right.
https://www.youtube.com/watch?v=blJfibQnTgU
He was employed by Breitbart.
He left.
we are supposed to understand the differences among four or five distinct fringe right-wing ideologies
No, you're supposed to be informed, and you're not supposed to impute views on others they don't actually have, just because you think you can get away with it. You know, intellectual honesty?
refrain from general remarks based on the behaviors of one group or another.
Yes, please don't tar people through stereotypes or anything which is not factually or rationally founded. Furthermore, judge people on the merit of what they do and say as individuals. Don't lump people into groups because you are incensed and you feel like it. That sort of behavior is precisely the moral downfall of the Alt-Right.
I hope you realize how important it is to be precise here. The man lost his job for providing feedback as encouraged by HR after he did a diversity course.
Just making claims that isn't backed up about by what he is actually saying isn't very helpful.
https://www.buzzfeed.com/josephbernstein/heres-how-breitbart...
Listen to an interview with him and here he present his opinions. He is provocative but mostly just an annoying showman. His harshest stance is on islam which given he is gay seems fairly understandable.
Joe Rogan has a good interview with him (which is the one that got him fired from Breibart.)
> He left
He resigned under pressure when controversy erupted over his past comments that were viewed as supporting, or at least minimizing the significance of, pedophilia.
He didn't leave because he suddenly realized, after years of association, that Breitbart was an alt-right outlet, so the fact that he left is not really germane to what his voluntary association with Breitbart says about his ideology.
He is a conservative who knows how to provoke that's about it.