alt Hacker NewsPoorly explained maybe but it covers not just that there is no basis but that no basis is needed and draws attention to the odd request for a basis where none is needed.
Just "there is no basis" as a response would be like saying "yes" or "no" to "have you stopped beating your wife?"
Aren’t we talking about enforcing/exercising a legal right?
Whether you have a reason to make a claim is much different than whether you have a legal basis for your claim.