The world isn't static politically. The norm throughout history has been for either two, or three, major powers to rival each other within a sphere of influence. Post WW 2, the rivalry was the US vs. USSR. Today, it's the US v. China with Russia being a third, smaller, player. It looks like it's coming down to the US v China with Russia on China's side and a feckless Europe (aka NATO) on the US side.
The US needs leadership that has at least some clue about global politics. Biden doesn't. He's dumber than a doorknob in a dumpster on this. Trump on the other hand, is a wrecking ball much of the time. He gets global politics, at least cursorily, but has no finesse or tact working them.
In the realm of global politics, a clueless, feckless, pushover, like Biden is the worst thing a nation can have. Sure, a bombastic, bulldozer isn't the best choice, but they won't be a doormat for the rest of the world to wipe their feet on, and that is exactly what Biden is.