Saying “you have to prove your premise” is not a good faith attempt to show the premise lacks evidentiary support. Maybe the premise has plenty of support, mayb

Saying “you have to prove your premise” is not a good faith attempt to show the premise lacks evidentiary support. Maybe the premise has plenty of support, maybe not. Maybe everyone else already has that context and you being ignorant of it isn’t the other party’s problem to solve. Or maybe the other party is a conspiracy crank and telling them they failed to supply evidence is solely flame bait. None of these options advance the conversation or assist other readers. If you say “citation needed” and you believe that has rebutted or refuted or challenged the other party in some way, you are wrong. It has not done so, regardless of the merit or lack of merit of their claims.