> This seems to be quite a common view: "I'm not upset by the invasion of Ukraine because the US has done a bunch of bad things."

There's a history to this "What about this other thing" distraction / derailing technique, and it was fairly common from Russia:

https://en.wikipedia.org/wiki/Whataboutism#Soviet_Union_and_...

https://rationalwiki.org/wiki/Whataboutism

https://www.theatlantic.com/international/archive/2013/08/th...