Earlier quoted context omitted.
Maybe it's simply because his opinion is shared by many people and I would even say that he is pretty mild in expressing it?
Equalling the Roma (and insisting on using a slur to refer to them) to wolves that need to be shot is mild?
Like a lot of his peers, the first Trump administration seemed to unlock a permission structure to be increasingly reactionary in public, facilitated by the overt political bias of Musk's X. We've now reached a point where this sort of "vice signaling" is a great way to gain clout in the overtly nativist tech bro niche in the US.
Which is to say, he wasn't always like this, and it feels like each new blog post is getting worse in a way that, if I were at Basecamp, I might have initially overlooked as the frog was slowly boiled.