Anyways, as a hired and paid employee of VIPkid, you are required to follow their rules, like it or not. Otherwise, you can leave and teach somewhere else.
As a western European-American who has spent time residing in various Asian countries along the China<->anti-China political spectrum as well as both blue and red parts of the US, I really don't see a problem with VIPkid prohibiting discussion of culturally and politically sensitive issues in their classrooms. That's just about respect.
If you feel so strongly/morally opposed to China's actions and history, VIPkid is the wrong forum, even if you are seeking to effect change. After all, we already are in the midst of another Cold War.