I think that interfaces can be many and that's perhaps not the issue, even if the command line interface is clunky and more tuned to the particularities of Linus brain folds than anything else. Magit in Emacs is pretty great and I like it and there's no shortage of other GUIs for Git. But I feel like the basic model could be more, say, principled or elegant. I find it somewhat ludicrous that this book is 456 pages long.

This isn't just Git either, I really feel that a lot of utility software for coding has tons of usability issues and quite often it's not like the innards are any better.