"I don't think anybody is saying that physics is racist."

They should be, by logical elaboration. In claiming that "designs are racist" in this ludicrous title, without any mention of motive or intention — none whatsoever — one sure as hell may as well be claiming that physics is, as you say, racist.

And do you know why?

Because by this same contorted (non)reasoning, physics is racist.

Physics is racist in precisely the same way that sunglass designers (et alia) are racist. And for precisely the same reason.