The post clearly addresses this problem. This discussion is not about the genetic risks of having children (which should be prevented according to OP), rather only about the relationship.
Why does this specific issue only happen to Sync then? I know that some things simply won't load because they aren't federated on your instance, which is not only a Lemmy-wide, but a Fediverse-wide issue. This only applies to some of the comments though, not the ones that I can see just fine in my browser.
It's the demon core, in case this wasn't irony.