Well, it turns out there are many Ruby communities, some vocal, some not. Talking abut the Ruby community is going to end up missing a lot of what is going on.
Mostly, though when people talk about a singular Ruby community they mean Rails.
"In a world where a standard can take years to be discussed, approved, implemented and supported, Ruby standards such as Rack skip from conception to widespread support at blazing speed."
Wish the same could be said for Ruby itself. Everyone who's completely moved to 1.9, raise your hand.
Overall the points made are interesting, but much the same is happening in other language communities. People building stuff in Haskell, Clojure, JavaScript, Scala, etc. are more than happy to steal the best ideas from other realms and make them their own.
So long as people don't start believing in The One True Framework or The One True Languge, we're doing quit well.