Those aren't the same propositions (I'm not sure they even are propositions?) so there is no such logical relationship.

"Meta will nuke your account" and "you nuke your account" is different. It might not even be possible to perform one of these (nuking your thread profile).

Your Instagram account is deleted (the state not the action) iff your thread profile is deleted.

Your thread profile is deleted iff your Instagram is deleted.

Those are the propositions that are logically equivalent.