Maybe some bigger subreddits are dying, but the UFOs and Experiencers subreddits are as active as ever, if not more. I guess these remain big there because these subjects are very censored in other social media (e.g. youtube) and never show up in search results (they show only videos from tv news). Reddit also censors them (e.g. some posts that contain more info than usual), but you can still see these posts when you go to these subreddits directly.
Americans are the only people that give a shit about that stuff it's so weird. Everywhere else it's as fringe as like flat earth morons but for whatever reason UFOs have constant massive interest among americans. I'm convinced it's because US gov is involved pushing it for whatever reasons whereas elsewhere other govs aren't pushing it.
they're a cultural phenomenon, but rest assured it's not really a thing here either. the vast majority of people either don't care or reasonably think supernatural/extraterrestrial uap's aren't really a thing. there's just a shit-ton of people here so it feels like it is.
There's a shit-ton more people in India and they don't have a significant UFO freak crowd. They have one like I'm sure every country has some small group but there's a huge difference between a fringe vs what america churns out. There's more to it that is uniquely american. Like, as a percentage of population there's way more of these people in america than here in britain, it's like weapons-grade shit for brains was poured into the population by something but it's incredibly hard to determine exactly what.
My suspicion is that a lot of UFO sightings have been military tests of sorts that are then covered up with crank conspiracy stories, and that making UFOs a popular phenomenon benefits in covering up actual sightings of test aircraft or military psychological tests of population reaction to certain events. All of these things happening significantly less in other countries because america's fascistic military shit dwarfs most of the world combined resulting in such a stark difference.