Lexicus
Deity
Yeah, so you're arguing that no claim is not worth making.
To me it's not so much that no claim is worth making, as that people who make such claims tend to vastly overestimate their originality. So when you're like me and have been dealing with racists on the internet for nearly a decade, you start seeing patterns, the same claims made over and over again no matter how many times they're debunked, and you just get pretty tired of it. Now, I'm a white person so I can only imagine how tiring it must be for the people these claims are made about to have to deal with them (and that's not even getting into the consequences of racism as a social reality).
It's not so much a general principle that some claims just shouldn't be made (though I agree that part of having social skills is knowing when that certain claims just should not be made in certain contexts), so much as arrogant racists responding to "I've already debunked this claim thirty times, just shut up and fornicate off" with "you have no opposing arguments, I win, QED, it's not racist if it's true"