I disagree with your read of that blog post.

In fact, in various parts of the text, DHH is actually trying to distinguish between a "simple" view that it's a "far right" political agenda, and instead the fact that people feel loss of identity, and lack of security.

I don't know enough about DHH to state for sure that he is, or he is not, a right wing or fascist supporter, but in my view that blog post isn't proof of that. I've read it and found it to be an attempt at reframing the problem with a fresh view.