I can imagine someone who xollects Labubus feeling insulted or patronized, but they are not lifting a finger to stop them from buying a Labubu. They are just publishing their thoughts. Their thoughts happen to contain moral judgements, that is not a departure from participating in discourse. Frankly it is ridiculous to suggest discussing morality is not engaging in discourse, and this kind of ontological/categorical argument is a way to sidestep the merits of the argument without engaging with them by just labeling them as illegitimate.

Generally, I'm just not buying that only some forms of discourse are legitimate, and again, if this article was illegitimate, your comment would be illegitimate for the same reason, so what are we doing here?

But I would agree that people who felt judged, slighted, etc. would be free to respond, "flaming" or otherwise. I see no issue with that. (Flaming is probably not the right way to respond but that's a different question.)