Don’t agree with the aircraft carrier bit. The point of aircraft carriers has always been that they can sit way the hell back, because the aircraft are projecting all the firepower. The F-35 and Super Hornet for example have a combat radius of well over 1000km.
They have always been vulnerable in the sense that it doesn’t take much to destroy them, a few torpedoes or ASMs suffice. The hard part is getting those weapons on target. That means either getting close enough in a very hostile electronic warfare and anti-air environment, or acquiring a weapons grade lock on a moving target from hundreds of kilometers away.
Both are very hard problems to solve, and $10k drones do nothing towards solving that. The threat to worry about here is not drones, but hard to intercept hypersonic missiles that are self guiding through passive electro-optical sensors that allow them to intelligently pick out an aircraft carrier to home in on.
Biden is at fault here too though. He was way too timid in his support for Ukraine, slow rolling aid and self-imposing all kinds of imaginary red lines. For more than two years he acted as if he was going to be president forever, with vapid statements like “we will support Ukraine for as long as it takes”, and didn’t take into account that there was a good chance that the next president would again be a buffoon who would try everything to undo previous policies.