Nearly every niche community I’ve joined has essentially died due to not having the critical mass of users to support that community. Hell, even look at the large states like California or Texas: they’re communities with only a few hundred active users and maybe a couple thousand joined. Feels like the lemmy is mostly us politics, star trek, Germans, and memes.
I’d guess that major UI revisions are a big reason for average users. People don’t like having to relearn how to do something or find a setting. If M$ implemented a legacy UI setting that by and large mimicked the interface and controls in W10 they’d clear a major hurdle preventing less technologically inclined users from upgrading.