Your comment hits the nail on what I wrote.

I couldn’t care less about stashing commands.

I do care about … if someone understands origins and not by definition because developer needs to know what is his local version and what is on the server and how those two affect each other. Bonus points if they understand server is not special in Git and their colleagues copy on their laptop can be origin as well.

Drawing graphs of what different repos look like? That’s irrelevant.

Irrelevant if one understands that Git uses DAG and is content addressable store.

You see someone might know those hard words but when working daily with Git reasoning about rebase or merge, cleaning up their own work with interactive rebase, making pull/merge requests or resolving conflicts it is much easier if one knows what is local what is remote and how Git stores data.

You also learn it once. In my 15 years of using Git I basically didn’t learn much new commands but having mental model of how it works was my tool to fix any problems other people had. Knowing commands or definitions is secondary.