It is though. Western AI tries to hide information like that with the justification of safety as well as things that might be offensive to current popular beliefs. Chinese AI presumably says Taiwan is China to help get more people on side for a possible future invasion. Propaganda does work - look at how many people think Donbas is still Ukraine and Israel is still Palestine.
The difference is that in China the info isn’t available without use of Western content, due to the totalitarian control over media, whereas in the West, information is pretty trivially available, even if the big companies keep it off of their platforms.
And sure ignorance is prevalent, but even GPT4 will tell me Donbas is still Ukraine, for instance. What a strange example to use, though!
But is it though? What's really the meaning of which country a region belongs to? Once somewhere has been occupied long enough, it usually becomes de-facto theirs. But how long is long enough? Other countries either do or don't recognize it and usually a consensus is reached, but not always.