Lemmy's issues are pretty gigantic as well - to the point where many people outright refuse to fund its further development, thus impacting the future of the Threadiverse (one example is the inordinate amount of time spent performing moderation activities rather than actually working on adding features to the codebase).
Anyway, it's good to have multiple alternative options - having more software implementations of the ActivityPub Protocol is unquestionably a good thing imho.
The social engineering though is NOT a good thing imho - fortunately it's an option that can be disabled, though unfortunately it is opt-out rather than opt-in, and not transparently handled at all.