You are quite right, and the US is rather happy China is spying off Guam and Hawaii. In fact, Admiral Locklear, Commander of US Pacific Command, was quoted in news media as welcoming Chinese ships off US shores gathering intelligence.
Blackstone, you are intelligent enough to know that he is happy because that way he believes it gives China less weight if China wanted to prevent US ships from spying in China's EEZ, because that way the US can portray China as a hypocrite.
However, I bet he woudl not be happy about Chinese ships spying in America's EEZ, if China surrounded both sides of the US coast with permanently stationed carrier battle groups, submarines, and have rallied nations in the carribbean and latin america against the US and has air bases, naval bases, and all manner of offensive weapons near not only the USN's few SSBN bases, but also its most populous cities and even its capital.
Basically, I'm saying that if the situation were reversed, and if China had surrounded the US with as much military power as the US currently does surround around China, then he probably wouldn't be welcoming PLAN ships spying in US continental EEZ waters.
In fact, the US in this case would be justifiable to react rather forcefully to try and prevent Chinese ships entering the US's EEZ especially if it is around a sensitive and vulnerable nuclear submarine base, especially if that submarine base hosts half of the USN's small SSBN force.
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So please try to see this in the larger scheme of things and the larger balance of power. This isn't about upholding international law or freedom of navigation. This is about China not wanting the US to have another military advantage on its doorstep to add upon all the other innumerable suffocating military advantages in the region which the US already have.
For the US to cry about "freedom of navigation" in such cases is a little nauseating for me to hear.