I am mad at Google for a lot of things, but this is not one of them. A map should represent the current reality. Google Maps defaults to the user’s local reality, which seems reasonable to me.
I worked at a mapping company and we had similar setups for contested borders. You would get the map that your government accepts. It was not the company’s prerogative to weigh in on those issues.
Remember that if Google Maps has to weigh in on obvious nonsense, it will also need to weigh in on far trickier issues, and at their scale, it might affect the outcome. This sort of legal neutrality seems like a better line of conduct to me.