[al_borland]

My guess is people don’t want to deal with the learning curve. If it’s not a website or an app people can just start using, it ends up being a non-starter these days. The pain of big tech is not bigger than the pain of the learning curve for most people.

[cmacleod4]

Actually there are a few web interfaces to Usenet that make it easy to jump in, see: https://en.wikipedia.org/wiki/Web-based_Usenet#Web-based_sit...

I operate one of these myself at https://newsgrouper.org .