Trump was literally a private citizen, so there's nothing he could have done to stop President Biden from pursuing an arms embargo on Israel or even just using the bully pulpit to rally Democrats agains the genocide. Trump wasn't responsible for Biden slobbering on Bibi's nuts for the past year. As he loved to remind us, Biden has been a Zionist for most of his wretched life, he didn't need Trump's help to support the genocide, he fundamentally believes in Israeli supremacy over that land.
I'm not even criticizing Biden for not making Bibi want a ceasefire because he can't control what Bibi does anymore than he could control what Putin does. I'm criticizing Biden for not even trying, because he believes in Zionist ideology.