Psh, everything related to Linux is eternally in beta.
I've said it before, and I'll say it again: that's one of the stupidest things I've ever heard, even if it is a joke.
That's the same as saying that nothing made by Microsoft works at all.
The vast majority of software has a stable version and a beta version/head. I actually can't think of anything I use that doesn't have a stable (non-beta) version.