A programmer loving free software, especially TeX and Go.
I am also a big fan of his books, especially Clean Code. His (far-)right opinions are bad, but should be (to some extent) viewed separately from his technical standpoints. However, even then a new edition would not perform well, there are too many people hating Clean Code (without really understanding its message/just ranting without having read it). But I was very surprised that ThePrimeagen recently interviewed his “opponent”, it was very nice to watch.
Closure! (I don’t think so, not many programmers like reading/writing functional code. But it is his current favorite language, so, who knows?)