I used CVS and ClearCase before moving into Git, and it took me some time to adjust to the fact that the cost of branching in Git is much much less than ClearCase. And getting into the “distributed” mindset didn’t happen overnight.
It is very powerful, but it is painfully obvious that no one has ever gone back and said, “but what if anyone else who wants to use this is not a Linux cli guru and already has an expert understanding of git commands?”.
This x100. I mean I think I know the answer - Git was written by a C kernel guy, and the devs that it attracted are C guys. The kind of people who think user friendliness is a weakness. Guess how you contribute a patch to Git? Well step 1 is reading a 10 page essay… Needless to say that isn’t going to attract many people that care about beginners.