Both are actively driving us further towards WW3, climate catastrophe, genocide, and absurd inflation. Biden has been a bigger enemy to working people than Trump has been in several ways, and of course Trump worse than Biden in other ways too. They both represent different factions of the ruling class who may have disagreements with each other, but are unified in oppressing the global proletariat. To pretend like Biden is a serious safeguard to rising American fascism ignores the ways Biden and Democrats have not only actively encouraged and partnered with the most extreme elements of the Republican Party but also engage in fascist politics of their own. Biden's function is not to stop Trump. His function is to stop revolution. They are twin heads of a single snake.
Working Americans are hopeless unless they can dispel with the fiction that the Democrats ever gave a shit about them.