VCS exist to make it possible to organize and track changes to project source code. Convenience of the user is a secondary goal to clear organization and code management.

A VCS shouldn't be unnecessarily difficult to use, but the fact that this conversation around Git's UX is endlessly rehashed is proof that version control is a hard problem.

If there was an easy and obvious 10x improvement over Git it would have replaced Git by now. Or to put it differently, when someone makes an easy 10x improvement over Git, it will see widespread adoption.