This might be total confirmation bias speaking, and I mean this to spur discussion rather than ramble about it too much. I see a very different style of posting from the Appendix N, Pulp Revolution, Science Fiction Should Be Fun crowd than the Literary SF group.
The Pulp group makes fun, talks about stuff they love. Music, movies, Edgar Rice Burroughs, gaming. The posts feel high energy and are about a lust for life on average.
The literary SF crowd has a lot of downer posts, usually links to fake news Huffington Post or angry poltiical sites on repeat. They talk about seriousness and professionalism at length.
Fun vs. Boring on display. It may come down to mindset, which could impact what we create in terms of art. Something to think about. Have you noticed this too?