Yeah git is complex. It performs a huge array of tasks, the problem domain is very complicated. Do people complain Typescript or Rust is too complex? Probably some do but most accept that learning a programming language takes time and dedication.
The hacker news thread on that article is depressing. So many people saying "waaahh git is hard! I had to look up how to do something!" No shit? You had to learn something you previously didn't know?!?
Like, multiple devs I've known had trouble understanding that things in git are often just pointers. Symbolic links. Yet it's treated like an alien ship just crashed into their lap!