Who cares about what overseas intelligence agencies know of them? I would be much more concerned about the agencies that sit close enough to actually be interested in my person. I am exaggerating (McCarthyism is probably not this hard any more and people are much less prone to take communism seriously nowadays) but just for example: if an American gets involved in an anti-communist club in the USA China will hardly care about him in particular but if some of the people in one's phonebook happen to be communists the homeland agencies can actually go after him and ruin his life :-)
Or if the relationship between China and the US becomes more confrontational, China effectively controls a large part of the US infrastructure which becomes a strategic risk. Kind of a nuclear option (no country would ever import anything running on electricity ever again from china if they were to do that).
