The use of whataboutism and the ‘calling out’ of whataboutisms are both mechanisms of narrative control.
Friends of ”I thought there would be no fact checking ”
Like the intolerance of intolerance there is discretion over what are acceptable intolerances. With whataboutism there is discretion over what are acceptable appeals to hypocrisy.
Whatsboutism is merely saying your appeal to hypocrisy is invalid. Which would hold more weight with me if the side saying it never made appeals to hypocrisy of their own. Otherwise they’re being hypocritical about making appeals to hypocrisy.
On the substance, I hate what Trump has done. I would not take the position that what Trump did is ok because of what Biden did.