"Some commentators have defended the usage of whataboutism and tu quoque in certain contexts. Whataboutism can provide necessary context into whether or not a particular line of critique is relevant or fair. In international relations, behavior that may be imperfect by international standards may be quite good for a given geopolitical neighborhood, and deserves to be recognized as such.
Christian Christensen, Professor of Journalism in Stockholm, argues that the accusation of whataboutism is itself a form of the tu quoque fallacy, as it dismisses criticisms of one's own behavior to focus instead on the actions of another, thus creating a double standard. Those who use whataboutism are not necessarily engaging in an empty or cynical deflection of responsibility: whataboutism can be a useful tool to expose contradictions, double standards, and hypocrisy."
Given Trump's more numerous and more egregious gaffes, I'm simply pointing them out to "provide necessary context into whether or not a particular line of critique [of Biden by Trump leg-humpers] is relevant or fair," and using it as "a useful tool to expose [their] contradictions, double standards, and hypocrisy."