That is not within vice presidential powers. And what do you think would happen if you started criticizing your boss? Do you think it would have a positive outcome for you?
i agree. if the argument was "Harris is bad in Genocide support, and Trump is better", then it is worth considering. but the reality is currently "Harris is bad in Genocide support, and Trump is a whole lot worse".
if you care about stopping the Gaza genocide, vote Harris. its infinitely better than the alternative