Full disclosure, I’ve been labeled as an astroturfer because of my optimism for Threads federating. So, take that as you will.
But I think that there’s a lot more nuance to it than what you’ve said. I personally don’t defend Threads, but I do defend Threads federating. I’m on Lemmy specifically because I don’t want to be on Threads. But that doesn’t mean I wouldn’t want to connect with Threads content and users.
On Reddit, I was mainly subscribed to a few niche subreddits. By reddit’s standards, that’s still like 100k subscribers. But over here, even though there might be 1000 people subscribed to those same niche communities, the 90-9-1 rule still applies. Either the community has one super-spammy power user trying to boost life into the community, or there’s just no one actually posting anything.
I’m getting enough of a fix to stay on Lemmy and wade out the peace and quiet, but I do long for the engagement of 50k+ users on a truly niche topic. My willingness to stay on Lemmy has been helped by me starting to re-utilize off-site forums specifically to those niches. But I can totally understand how it just feels dead to a lot of the Reddit exodus.