Did they just defederate from that one instance, or was it broader than that? Wondering if I can still interact with them from the instances I have accounts on.

Great advice and equally applicable to real life. By assuming positive intent you're counteracting the Fundamental Attribution Error.

tendency to attribute another's actions to their character or personality, while attributing their behavior to external situational factors outside of their control.

Otherwise you're likely to spend a lot of time being angry at people who don't really deserve it. Or even if they do, it's just not worth your mental energy being upset.