This is what I think would be most probable too. It’s still too socially stigmatized to outright say something that effectively just means “I’m a Nazi,” so they’d have to play it off as some kind of joke.

I do, however, think a lot of them would suddenly, for no reason in particular, begin saying things like “Well, Hitler was a bad guy, but he did have some good ideas…” while going on to describe some of the worst ideas known to man.