Whataboutism isn’t a fallacy and is widely misused online.
If someone says “I think x should stop because of y”. It is a valid argumentative response to say “y also occurs with z, so should z also stop?”. It is argumentatively revealing either hypocrisy, or that the original imperative relies on additional, unstated arguments/assumptions/biases.
If someone says “I think x should stop because of y”. It is a valid argumentative response to say “y also occurs with z, so should z also stop?”. It is argumentatively revealing either hypocrisy, or that the original imperative relies on additional, unstated arguments/assumptions/biases.