Yes, it inarguably is. There is no room for reasonable disagreement on this issue of objective fact. Attacking something personal—such as motive—is a personal a

Yes, it inarguably is. There is no room for reasonable disagreement on this issue of objective fact. Attacking something personal—such as motive—is a personal attack. "Typically this term refers to a rhetorical strategy where the speaker attacks the character, MOTIVE, or some other attribute of the person making an argument rather than attacking the substance of the argument itself." https://en.m.wikipedia.org/wiki/Ad_hominem https://en.m.wikipedia.org/wiki/Ad_hominem (emphasis added) Arguing against preservation of an artifact—based on the the opponent's ostensible motive that "we should glorify some sick mind" who created the artifact—is a personal attack. It is unbecoming, and it is prohibited on HN.