There was nothing wrong with what Kartographer wrote, let alone was it “very rude”. The truth stings sometimes.
It is not supposed to sting on here. We are all supposed to be friends. Debate, discussion, disagreement is fine but getting rude with someone is not okay.
As far as making a bigger deal of the situation that it is, mine was a passing comment, one I felt was an appropriate reminder. We all get caught up in debate, that is fine. So are reminders to keep it civil lest we end up like DU.