Yes there are attack vectors, but that doesn't mean they will in fact be exploited, or effectively so. I just see it as one possibility, without being an inevitability.

I think we don't really know how the game theory would play out, because even under your hypothetical 6102, you don't know how countries besides the United States would act. We are moving away from a world where the US can dictate such things.

Furthermore a 6102 may just create a black market for Bitcoin. This can make a product more expensive, as the available supply is constrained. Development would move out of the United States, and focus on privacy features.

There are infinite possible futures we could imagine, but I find I have been least successful when I get paranoid about negative potentialities, and most successful when I assume everything will be fine. Living in a bunker is no way to live.