The wumao and supporters of the CCP have been pushing this racism nonsense for a while now to try to divert criticism against the CCP. It’s unfortunately very common.
I have seen people doing this and it's deeply annoying to reframe criticism of the CCP as racism. Not everything is about race. I'm deeply annoyed by how much race is becoming a thing in general - that seems like it's going to end up being counterproductive to ending racism. I'm not going to go so far as to say it's purposeful by the CCP. But it could be.
On the other hand, calling racism "nonsense", in any context, that's some Oswald Mosley shit.