I use Jerboa and have already blocked the @lemmy.ml instance. There were calls to make that a thing with lent itself but I don't think it ever happened.

There were also suggestions to do more of the defederstions in a "soft" way, by means of adding the instance to the block list of any user on the instance that wants to defederate it. Reversible by any user that wants full access with their main user.

From what little I understand about how Lemmy works and what the goals of the Fediverse are, this sounded like a much better way to do things.