I wouldn't say "pretty much nobody" uses cryptocurrency.

The truth lies somewhere in the middle. But in terms of mass adoption? I wouldn't say that has happened, because there is still too much friction in terms of dealing with your own opsec, keeping your keys secure, etc. Like I don't see average Joes going into it en masse. But anyone with enough determination will use it.

I say this as someone who is personally opposed to the technology on principle, but I'm not deluded to think that nobody else is using it either. It has a market.