I just looked at the instance list and they’re literally federated with burggit.moe so yeah I would definately describe this instance as a timebomb very much worth defederating, there actually aren’t any instances blocked on here on rammy which seems nice until you realize just how many known awful ones there are that are connected and accessible to rammy.
This shouldn’t even be something being debated, the instance is abandoned, people are posting hateful content, and it’s federated to the worst of the worst instances on the fediverse.
It’s not drastic considering the circumstances, the instance is unmoderated their admin isn’t available, that’s as good a reason as any to defederate them. The instance also doesn’t have a blocklist, it doesn’t block any instances it’s also on outdated software and being unmoderated that is a recipe for disaster.