People making that kind of statement disingenuously is definitely a negative trope for a reason, and because people are likely to interpret it in light of that trope it is bad etiquette. The reason it’s misused that way though is because it is one of the simplest ways to frame a statement of polite disagreement. If people not wanting to attack marginalized groups avoid saying it, that’s probably more because most of them have picked up on the etiquette rule rather than because the inherent meaning of such a statement is an attack.