There is no reason for a bot to be able to access or post on federated social networks if the goal is to make social media humane.
For this reason, bots should be heavily disallowed from posting content to or accessing content from federated social media.
Surely you understand that “disallowed” and “federated” are mutually exclusive, no?
Block and move on. Maybe pick an instance that doesn’t allow them. If they’re useless then it won’t make much of a difference.