This is from people that actively try to avoid being insensitive. But it means there are always limitations in perspective. It requires that any one person represent the 'truth' for an entire group of people, and never understanding if that 'truth' has consensus. Cohesion in American society means never challenging the consensus of someone representing a group that you aren't a part of.
The situation is markedly different from Hong Kong.
In the same vein, many people in the US and abroad would find Taiwan's view of Tibet to be surprisingly uncollaborative over different points in recent history.
Many people are so focused on Greater-China satellite victim complexes such that many assume they all see each other the same way when thats not the case at all.