One issue is that Naval ships are very different from commercial vessels, and at least in the USA, almost no shipyards have shared facilities and staff between the two products since WWII. Interestingly, most other countries do not build most of their naval tonnage (destroyers and frigates) to the same standards that the USA does (European countries are notable for using commercial hulls standards for these ships).
On a related note, the Odd Lots podcast had a (relatively) recent Jones Act debate episode, which is worth a listen if you're interested in the subject.
Is that a problem? Why would navy ships need a different hull construction?
It's possible to be semi-famous and still able to go to the grocery store and pump your own gas without getting recognized. The local sports radio guys don't need an entourage, even if they do get recognized. But as a rising artist, you hit a point where you can no longer go out in public at all. It's really shocking when it happens because it's so abrupt. My dad's famous friend was a regular at a local restaurant and wasn't bothered for a long time, even when his name/face started showing up in the media. Then one day another customer shouted his name and he got mobbed by fans, and he realized he couldn't go out to eat like a normal person anymore. I think Charli crossed that line with the success of her album Brat last year. It's the point where you start to ask yourself if it's really worth it, and maybe consider going full recluse like Thomas Pynchon. (That's not even getting into the online stan culture stuff that Charli talks about in the article.)
In Hollywood, that line gets crossed at a surprisingly low level. I am friends with Josh Sussman, who played Jacob Ben Israel on Glee. I occasionally visit him in LA, and we can’t go anywhere in public without getting constantly stopped by people wanting photos. It’s exhausting.