You do it all the time. I don’t see why you suddenly have a problem with it.
Quite an accusation. Have specific proof to make it credible? Because at first glance it seems like an incredibly childish response. As you’ve written it it’s functionally just “NO YOU!” With evidence it could be salvaged into a valid point poorly made. Although it should be noted you don’t even attempt to deal with the substance of their argument, opting instead to just insult them.