I would argue that shunning racism is productive for the commons. Instead it is the person calling it out who is being shunned. Wonderful.
The claim being made is so obviously, categorically incorrect that it falls apart within a single second of examination. For example: Hoyoverse, a Chinese company, produced Genshin Impact and Nodusfall, two games with completely different art styles. And yet, in typing this, I have already spent an order of magnitude more effort[1] than somebody professing their racist worldview is dignified to receive. I think the actual productive response is shutting that down. I mean, really. A billion people who can only produce one artstyle like a factory? The claim is so patently, obviously, intentionally racist and incapable of holding up to reality it's absurd.
I could spend an hour scrolling back through my Twitter likes and collecting links to a huge array of Chinese artists with divergent artstyles, but in doing so I would be doing nothing more than wasting my own time, because someone with such a flagrant disregard of reality to come to that conclusion in the first place isn't going to change their view based on being shown reality.
[1] https://en.wikipedia.org/wiki/Brandolini%27s_law
Whatever. I unfortunately have a compulsion to check this site, but I'll do my best to refrain from posting in the future, since your vision of the site is one where posting racist comments is welcome and calling them out is unwelcome.