|Operation Crossroads in its non-cakelike, supremely and irrevocably radioactive original form. If you look closely, you can see the flotilla.|
And that's just vulnerabilities exhibited in normal peacetime operations, without enemies shooting missiles, setting off bombs, firing torpedos, and whatnot. So maybe the US Navy on balance prefers that somebody else worry about storing and delivering tactical nuclear weapons.
Because of the re-nuking of Asia, at least in US "defense" doctrine, that I anticipate, I view current Navy activities in the West Pacific as a dash by the US Navy to create a narrative supporting its relevance and enabling it to bulk up its position in the few years before the return of tactical nuclear weapons and growing local qualms about the wisdom of the pivot combine to sunset the Navy's dominance of the China-containment narrative.