The degree that China goes to censor things reminds me of kindergarten. Pull the shades down, and kids won't want to go outside? Is it simply a reminder to their people of who's in charge, at this level of pettiness?
The United States doesn't officially recognize Taiwan as a country. Taiwan is not a member of the United Nations. Apple's revenue in Taiwan is peanuts compared to that of mainland China. The list goes on.
Trump enraged China when he tweeted that he talked to "the President of Taiwan" though, so clearly most people in the US think of Taiwan as being separate from China