Moralizing through whataboutism does not logically follow in disproving the China threat narrative, it is axiomatic that what matters is what they are doing to us, not what we are doing to them from that vantage.
Rather, I'd say it speaks more about how deranged the post-snowden/anti-neocon figures have become, from critiquing creeping authoritarianism to functionality acting at the behest of an even more authoritarian regime. The funny thing is that behavior of deflection, moralizing and whataboutism is exactly the kind of behavior nationalists employ, not addressing arguments head on like the so-called "American nationalists".