> I merely bring it up because it's something we can improve in the U.S. It does not excuse China, which seems to go two steps further down a bad road.

However, the actual effect of bring that up is to:

1) Blunt criticism of this newly implemented Chinese policy.

2) Distract everyone from it with a debate about US policy.

No one's talking about improving the US OR China here. Because of the whataboutism, we're derailing on if the two are morally comparable or not, which suits the Chinese authoritarians just fine.