See to me Discovery on Lemmy and Mastodon is totally fine, but that’s because they got big enough for more centralised tools to become available and once you know what those are, you’re all set.
I expect before the migration here and before things like Lemmyverse popped up, Lemmings found themselves running into a lot of the same frustrations I’m currently seeing on PeerTube. So just gotta hope these other services can claw their way to the numbers that demand better tools being built 😄