"folders": we can go back to "directories" if you'd like. It's still what I say most of the time.
"wrenches/screwdrivers/gears": This was the most baffling one. Who's never used a screwdriver? And he says it as if it's obvious.
"phone": 75% of the US still has a landline (as of a year ago anyway), so I find "you haven't used this in 20 years" to be a rather dumb statement too.
"tv antenna": Antennas have actually come back recently when broadcast stations switched to digital and HD feeds. This would have been a better criticism ten years ago, and makes him the one that sounds out of date.
When I saw the article title, I figured "floppy disk" = "save". And sure, that's somewhat valid. But as others have pointed out, it's idiomatic. It happens in language all the time: people still say that someone is given "free rein" even if nobody involved has ever ridden a horse.