Right. They were chosen because experienced Java devs should be extremely comfortable with them. Not just familiar, but basically experts. And if they're not, it's a big red flag that casts a shadow over really anything else they have to say.

I'm sure each language/technology has a small list of universals that experienced practitioners should be quite comfortable with. Of course there are exceptions, it's not perfect, but my point is that these things are a good proxy for estimating overall competence level.

By what measure are you prioritizing Java+git over e.g. Java+Perforce in terms of universals?

Thank you for saying this! I have 30 years of paid CS experience, a degree, owned my own software company, worked for Fortune 50 companies and don't use any of those technologies. (I have used git, and used rebase, but like everything in git, it's so poorly named for what it does, that I don't remember exactly. I wouldn't even want to try to explain it at this point.)