Trying to change the subject was not invented by anyone in particular, but the US likes to slap that label onto everything that directs criticism at them. For example, the US has the highest prison population per capita but will preemptively scream about enemy countries imprisoning people with countless stories in the media. Calling out the hypocrisy is countered with accusations of “whataboutism” but that’s not whataboutism, it’s simply pointing out hypocrisy since it’s the same subject.