Websockets - Gorilla only?

I find it kinda odd that github.com/gorilla/websocket, which is deprecated and the repo is in archive mode, is still the most popular library for websockets.

Case in point: go.elara.ws/go-lemmy

I'm not saying this is inherently bad, I just wonder why that is.

I guess the most common last words are "How hard could it be?", but why is nobody rolling their own?