Which often shares interesting things in the realm of technology, but with a high degree of skepticism - some of which practically results in incitement against minorities, with people being harassed by some of his follower crowd.

He had a stroke not too long ago, so this seems to be a sign he's recovered a bit.

Professionally he's running a successful code/security consultancy [2]. This pays his bills, so that nerd-wise he is running his own web server and content management system where everything is self-written, inclusive of his own libC implementation with a focus on bare minimum requirements. [1] He's been around in the German IT community for decades and was earlier involved in Chaos Computer Club (CCC) where he still used to attend their annual congress, which is kind of the "meet and greet" of the German IT community.

His self-hosted blog was/is very popular/controversial. He is pretty opinionated on nearly everything and he's not taking hostages when he criticizes someone. So the "woke" people don't like him, the nazis don't like him, the corpo guys don't like him. And he pretty much doesn't care.

Earlier this year he apparently suffered some critical health condition and went quiet without notice for more than 6 months, I believe.

[1] https://en.wikipedia.org/wiki/Dietlibc [2] https://www.codeblau.de