There are a bunch of watch parties on Mastodon, our fediverse sibling. Usually, people all watch the movie at the same time and make brief comments (bc Mastodon is like Twitter, see?)
see this calendar of Mastodon watch parties (WARNING: includes Bluesky, which has chosen the path of enshittification. Also, some of these watch parties may be dormant.)
edit: but yeah, it'd be cool to have a watch party here, where we could do "longer form" takes on things.
You know how cats are sitting still staring at something, and you're like "how can that cat sit still so long and stare at something?" It's this. The entire world is a game to them.
There are countless other 'niche' communities that have no posts for months, however.
Hey, have you seen !fedigrow@lemmy.zip? It's got a lot of discussions on how to handle this.
I think that to grow a niche community, you need at least 2-3 regular posters, and you need to make posts that encourage discussion (i.e. ask questions or provoke a thoughtful reaction that readers would like to share.)
As for why it subjectively seems to be declining... maybe you know what you're gonna see in New, and so you engage less with posts? Maybe it's time to be more of a poster!
The human's the worst of the lot.