Whataboutism is a type of argument or rhetorical device that involves responding to an accusation or criticism by making a counter-accusation or raising a different, often unrelated, issue. Full definition
But if you have enough solid facts, and can prove it with third party sources, you might be able to overwhelm some of the bias sensory in the person using whataboutism. (thecollegeinvestor.com)
Dealing with whataboutism does get frustrating as someone who wants to help people with their money. (thecollegeinvestor.com)