I think that is true that most people will not leave reddit. I’m in a subreddit called redditalternatives, and lately not many people are posting in it anymore. It definitely feels like a niche thing, but I think it’s okay. Reddit won’t last forever, and in the meantime, we can be seeing if fediverse is the way forward. This isn’t the first time reddit screwed up and it won’t be the last.
They’re also I think trying to become like tiktok and give lots of forever scrollable content, but I think tiktok/youtube shorts already fill that niche