What's wrong with Wikipedia?

Unrestrained bullying, increasingly smaller numbers of article editors and a cruel clique of editors. It’s basically in maintenance mode, it’s not increasing in quality or knowledge.

Kind of like OpenStreetMap's community. I would guess the same can be said for anything like there where it's a free, open, global, community-led effort. There will always be a hard-core niche of people who live and breathe the thing and are naturally protective of it e.g. picky with other people's contributions.