Reminder that Trump was a hard-line interventionist who literally bombed civilians his first day in office and carried out more drone strikes than every president before him put together. The guy hired John Fucking Bolton to run national security. His white house was filled with Bush-era neocon monsters. The fact that he occasionally said "no more war" in a speech doesn't mean fuck all.
Shit on Biden all you want because he's a piece of shit, but don't cape for fascists in the process.
If we're squinting to look for a silver lining of the Trump administration with respect to imperialism, I would argue that the damage Trump has done to US alliances with much of the West is going to have serious impacts on America's ability to project strength around the world. A major part of the justification for things like the Iraq war was the fact that it was a multilateral joint effort by the US and its allies.
Now a lot of European leaders are starting to unhitch their wagons from the US. It's not like the US needs that support for their military power, god knows we poor enough money into the military to take on half the world by our self. But that idea of acting on behalf of the "international community" was a powerful narrative that could deflect a lot of criticism and spread blame around. The US is obviously still incredibly dangerous, but now it's more isolated.