Re:Craig Newmark: a survivor from the era of internet optimism
by nathanasmith on Monday July 15, 2019 @03:59AM
(#20438933)
"Tu quoque, (Latin for "you also"), or the appeal to hypocrisy, is a fallacy that intends to discredit the opponent's argument by asserting the opponent's failure to act consistently in accordance with its conclusion(s)."
You might find the rest of the wikipedia article interesting. https://en.m.wikipedia.org/wiki/Tu_quoque