> It also makes me think about the classic Save icon: the floppy disk. That was certainly descriptive at its origination, but is it still so?

It's a symbol, it could be a 7-pointed star and people would associate it with Save.

Even when you knew what a floppy disk was, why would you push that button? You haven't seen a floppy in years, don't have a floppy drive and don't want to create a floppy disk.