Fuck Biden, the worst president ever. He is the biggest threat to humanity ever (Hitler included)
Not that you'd know - you have a lot of delusions about life in the US. Not to mention your delusions about your own neighbors...
In order of likelihood to destroy the planet:
Destroy the planet? Not really. I mean, the planet has been hit by a Mars-sized missile (Thea...theoretically) a whole bunch of smaller bits (late bombardment) and an asteroid the size of my hometown (66 million years ago) and it's still around, but Barbie's assertion that Biden is the "biggest threat to humanity ever" is also way, way off.
Biden is a middling public servant whose only superpower is that he's just been around so damned long that he's got a handle on how the system works that Trump simply can't begin to grasp.
It's a bit like that scene in Star Trek II, the Wrath of Khan. The villain gets the jump on our heroes because nobody sees him coming, but Kirk saves the day because he knows how things work on a star ship. He's got access to the prefix code, shuts down Khan's shields, and kneecaps the bad guy. Khan is a "stable genius," but to quote Mr. Spock: "He's intelligent, but not experienced. His pattern indicates...two dimensional thinking."
Trump is Khan. Filled with rage, convinced of his own superiority, and ultimately short-sighted and inexperienced.