Cryptocurrency definitely has some downsides and I can very much see why it’s part of “tech bro” culture. I do have to say though, sending someone some coin without having to enter my information into whatever they use, is a nice UX. A lot off OSS people have addresses now.
I mean how do people put up a persistent, trustable place to send money using a format that's well understood. I mean sure you can put up a website and use stripe or something but I think lots of people would be sketched out by giving $1 subscription to such a site.