You assume that maps are uniform throughout the U.S., or that the U.S. government mandates certain depictions. They're not, and the government does not, except for the maps it purchases for itself.

Whatever Google depicts is what Google chooses to depict; and what they pick, at least in the U.S., is a function of what they believe people expect to see or need to see. They depict Taiwan as a separate state despite the U.S. government not recognizing them as such because it's what people expect to see. It's trivial to find maps in the U.S. depicting any alternative you desire. Equivocating popularity with government-mandated depictions is not constructive.