Lemmy

I think this is a really good chain of logic!

Not particularly. It's literally guilt by association.

They make a good point about defederation not letting us ban them and therefore it shouldn't be seen as a protection, but that user was federated with us for a long time and wasn't banned. There were opportunities and the moderation team didn't choose to. So I don't think there's an implicit ban-evasion element on a personal level, they were tolerated and if I remember correctly the defederation was due to antagonistic user interactions between the communities like vote brigading and troll accounts.

I wouldn't be against the user being banned here for things like shilling and some of their comments here. But defederation and their activities elsewhere have nothing to do with it.