Criticisms are welcome.
The PRC argument that US surveillance operation in China's EEZ is an abuse of freedom of overflight seems weak. The rights of a coastal state in EEZ are limited under LOS Convention., art. 56, and the obligations of other states in EEZ under art. 58 are probably limited in the same way. At any rate, the frequency of spying activities in foreign EEZs without evoking protests seems to belie the argument that reconnaissance operation in a foreign EEZ is contrary to international law.