There has not been a pro-US exceptionalism tone in any HN thread in awhile. Go to any thread recently and it's pretty anti-capitalism/anti-US.
I've definitely noticed even more than that - any submissions painting the current USA in a good light are instantly and mercilessly buried (you can check my submissions for examples), while anything even remotely on the "USA bad" side gets to the top. It's really a sad state of affairs.
In all open weight model discussions there is at least some anti-Chinese sentiment