If I was logged into several instances at once in the client and seeing the composite feed and then could choose instance when replying or posting (with some set default, like from: field in e-mail clients) lemmy.world could ban piracy all it wants and it’d still be in my feed without me having to leave it or change instances.
The entire point of federated social media is that you can swap instances if you don’t agree with policies. That’s the whole point of Lemmy!