True, but cars deal with this by having separate manuals for normal owners and for maintenance. Owners usually need information like how often to change the oil and what pressure the tires should be at, but they're less likely to need engine timings.

Git's documentation (from what I hear, anyway, I've barely used it outside the GitHub client) seems like it's written to say "Everyone using git is a programmer, so everyone using git wants to know about git's implementation details."

As someone who would rather have a handle on the basics (and 99% of use cases) before digging into that, google does a better job at explaining what things are for. Which works, but I really wouldn't mind having some canonical user-friendly documentation available instantly on my computer.