Isn’t this developed by one person, isn’t open source and forbids NSFW in general? That is never going to go well.
Tildes
No mobile app and no ActivityPub so it’s a very specialised. Additionally I don’t like the UI at all and I’ve read this in multiple threads here as well.
Lemmy + Kbin
Both are show the same content as they are federated so it’s up to who prefers what really. I prefer Lemmy, but anything is fine.