It's worth mentioning here that maps inside China don't have this problem, Baidu Maps and Apple Maps (which uses Chinese map data when used in China) for exampl

It's worth mentioning here that maps inside China don't have this problem, Baidu Maps and Apple Maps (which uses Chinese map data when used in China) for example show accurate GPS position and correlation with satellite images. It's presumably just typical government inertia at this point... Everyone using maps within China gets accurate maps so not worth the trouble of trying to change the policy.