It's not THAT complicated but I wouldn't call it dead simple. When you understand how git works internally yeah it's pretty simple but people usually start with the idea that it's a tool to put your code on a server to synchronize with other people and only later learn that you have both a local and a remote (or multiple remote) tree and how the tree really works.

I think the problem is most git 101 tutorials teach it wrong, IMO the best git tutorial is this: https://wildlyinaccurate.com/a-hackers-guide-to-git/

Unfortunately it's pretty dense so it's gonna scare off a lot of newbies.