Anyone who well and truly enjoys their job has severe mental issues that need to be worked out. Why would someone give effort towards something that won’t ultimately reward them? It’s not their project, it’s not their company, it’s not their passion.
An idea i had that i imagine would turn out pretty well is Japanese speaking forums for westerners specifically. It’d have a buy in that no one interested in only trolling would go in for (learning a language, especially one far from English).
Some pirate coves protect themselves by requiring an invite from someone already in the community, that could work really well too.
Generally, just requiring a little work to get someplace would make communities a lot nicer.