So is there any incentive to switch for the people who went through the trauma of burning the old ones in their soul ? (I often heard that knowing how it works internally makes git commands feel natural. I was lied to)
If you know the old ones already and don't make mistakes, it's fine not to use these, really. I consciously got the new commands into my muscle memory in case I'm pair programming or someone less familiar with Git is looking along.
And yeah, knowing how Git works makes it a lot easier to understand, but it doesn't make the commands more natural. (Except perhaps knowing when you can use a commit id instead of a branch name.)
Currently, that's an ubuntu 18.04 machine at work and that doesn't have `git restore`, yet.
distributing improvements after a large mass of old habits are spread around is something to be fixed