Not necessarily. From what I understand, it's about lemmy/kbin not vetting users. Because they were a a more heavily moderated community (by design) it's harder for them to keep that standard with other federated instances. Instead of trying to combat the population increase platforms have received, they defederated while the "riff raff" gets sorted out. If they are willing to re-federate in the future, I'm sure they'll be back. It's just the influx of users makes it harder for their small team to moderate content.

This is how federation works, though. It's by design. If you are wanting to see that content, you are able to move to a different instance (or even beehaw, if they are still taking applications), or to one that is still federated with them.