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.
I guess it's because gorilla/websocket has had a really big mindshare for a very long time.
and no project has had time to catch up and/or provide "reliable" hints that they will maintain that new project for a sizeable long time.
"the devil you know" and "the technical debt you know"...