The community here makes updates from time to time, and I think we're pretty responsive to questions and bug reports. But our changes are not 'blessed' by PG or anything. Since PG has said that "future releases can break anything", such a blessing wouldn't be of much use anyway.

Bottomline: It's not for you if you just want features and don't care how they're built. But if you like the idea of gradually mastering the internals of the tools you rely on -- welcome aboard! You don't have to know anything at the start; we try to be very helpful.