Perhaps more than anywhere. Science is a process of challenge and response, not a static body of knowledge.
> Presumably the purpose is to answer from established science.
"Established science", which is still subject to debate itself, isn't what link aggregators cover. They bias towarss stuff more like science news and novel study outcomes, which are nothing to do with established science except as a seed for critical discussion.
Even in fairly niche subs I find that "surface level" content quality dominates and nuanced takes are frequently unpopular which is basically a recipe for anyone who knows anything to leave. I find the best subs are satire subs because having to know enough about something to be able to satirize it weeds out all the people who create and perpetuate surface level content. I assume there are some super niche subs that are similar.