Sinophobia as such (not always, and there's obviously a relation) isn't about the Chinese people, about their racial identity. It's about a menacing aggressive world power, about a tired anti-Communist McCarthyism (which has always been an excuse to clamp down on the left/progressives, a menace to free speech).
If Russia were still the USSR and the cold war hadn't ended and they were our AI competition & where giving away the latent matricies of reality that the US profiteers extracted by stealing all the worlds knowledge illegally and which they want to use to raise the ladder & leave a permenant plebian underclass, we the US imperial fatcats would be doing the same sabre rattling and fearmongering and tension raising for sure. Sinophobia here is just a particular fear of "other" for the only other that's relevant.
And that sucks, no matter who it is we are trying to other here, no matter what phobia the propogandists of the GOP and Technofascism are spinning, ginning up. To fixate is to be unable to see the point.