I don't understand why you'd say that in response to a 2nd-party person calling out the 1st-party rather than in response to the 1st-party person themselves.
i.e. me calling them out despite (I'm guessing) likely agreeing with their general politics is the opposite of "allowed to behave like children".
i.e. me calling them out despite (I'm guessing) likely agreeing with their general politics is the opposite of "allowed to behave like children".