Your use of the words “plans” and “policy” suggest a level of strategy that would be a little generous.

We are not equipped to monitor all the assorted communities on all the instances in the fediverse and ad-hoc go about blocking communities for every potential activity that goes against the site rules here. Even the lemmy.world actions of blocking a couple of communities is the weakest bit of token effort possible.

That’s a long-winded way of saying ‘no - we have no plans’. I don’t even see what risk the lemmy.world people thought they’d be exposed to if their users posted content on some other instance.

For visibility, these are the instances blocked here:
lemmygrad.ml
lemmynsfw.com
federotica.com
exploding-heads.com
pornlemmy.com