Practically speaking, that is true. I am sure some do espouse such beliefs, but they keep them hidden for the most part. So I stand by what I said before and the order I arranged things:

1. Trolls, edgy teens
2. Liberal plants, agitators
3. The few sincere neonazis

If I were betting, I'd put money on the first one most of the time these days, while being on the lookout for the second one.

So I think we mostly agree here.