This sort of whataboutism isn't an argument, but a concession to the person you're replying to. Instead of meeting an example with a counter, all you've done in this conversation is show that there are now TWO examples.
The OP explicitly claimed that US cares about human rights.
So no it is not "whataboutism", which a bs term anyway because it is almost always used in situations where someone implicitly claims that the US cares about human rights and that's why US atrocities must be brought up as counterargument.
