Our aircraft carriers have been in the periscope sights of communist submarines since...oh, I don’t know, the early Sixties when the Soviets made a big splash about following the USS Saratoga with one of their subs for a few days.
All surface ships are vulnerable to submarines...all of them. It boils down to how much resources are being applied to protect those surface ships via ASW technology.
If anything, we are letting ASW wither, and that is the danger.
I have seen that first paragraph of the article printed over and over and over again in a multitude of different ways for the last 40 years, but surface ships still find a way to be useful.
As I understand it, the soviet subs took quite a beating during the cuban missile crisis. None lost but nevertheless a beating.