There's a few historical reasons for why git was considered complicated. One of them is that it was complicated. The people who started using git very early on in order to work on the kernel really had to learn a very rough set of scripts to make everything work. All the effort had been on making the core technology work and very little on making it easy or obvious.
Linus TorvaldsI used to be interested in Windows NT, but the more I see it, the more it looks like traditional Windows with a stabler kernel. I don't find anything technically interesting there.
Linus TorvaldsI seldom get self-righteous, and even when I am being impolite (almost always on purpose - there's an art to insulting people, too), I tend to try to not be too serious about it. And most of the time it means that I can take criticism constructively, and sometimes just change my opinion on the fly and laugh at myself over having turned on a dime.
Linus Torvalds