It's not "so easy to use without understanding it", it's the opposite it has so much unnecessary complexity (on top of a brilliant simple idea btw), that once people learn how to do what they need, they stop trying to learn any more from the pile of weirdness that is git.
Decades from now, git will be looked back at in a similar but worse version of the way SQL often is -- a terrible interface over a wonderful idea.
I don't think that's true. In my experience it takes time, but once it clicks, it clicks. Sure, there is a bunch of weirdness in there as well, but that starts way further than where your typical git user stops.
I don't think git would end up this popular if it didn't allow to be used in a basic way by just memorizing a few commands without having to understand its repository model (however simple) well.
