I would say it's important to hold off on the moralizing until after showing visible effort to reflect on the substance of the exchange, which in this case is about the fairness of asserting that the detection methodology employed in this particular case shares the flaws of familiar online AI checkers. That's an importantly substantive and rebuttable point and all the meaningful action in the conversation is embedded in those details.

In this case, several important distinctions are drawn, including being open about criteria, about such things as "perplexity" and "burstiness" as properties being tested for, and an explanation of why they incorrectly claim the Declaration of Independence is AI generated (it's ubiquitous). So it seems like a lot of important distinctions are being drawn that testify to the credibility of the model, which has to matter to you if you're going to start moralizing.