You’re missing the point. Do you think a president with an R next to their name would be any less of a bloodthirsty moron? So now it’s not only “they’re bombing Palestine” but also all the other human rights violating shit that happens under a Republican president here at home.
Yes Biden should stop absolutely supporting the genocide, but threatening to replace him with literally the same plus LGBTQ+ discrimination, immigration fear mongering, more destruction of reproductive rights, etc. is certainly not a sane reaction.