As someone on a bunch of project teams, I haven't seen anyone on that team pushing garbage code, and the much bigger concern is how few people participate in projects at all, which github doesn't solve. I see one request to join a team every few YEARS come in my inbox.

J.Ja

I think the current setup is better, gives a level of security to the application. Having everyone rights to change the official build may break it unintentionally, so at least keeping those rights to limited number of people make sense. Anyway, you can alter the component however you want after installation so you can still make improvements on it even if you're from the outside. If from tinkering you found a great idea, bug, or anything that can improve the component, then it can be raised in the forums.