Broadly, I agree.
@hscs also makes a great point, there is a lot to break on a well deck. I’m just not convinced that, right now, we could build one in the U.S. but if it were built for a corporation (the contractor) as opposed for the government it could work - or even be built overseas.
Edit to my comment….we do have a few vessels like the USNS John Glenn (T-ESD-2) that, I believe, were added to the aux fleet and designed with this kind of mission in mind. Perhaps build another (or others) dedicated to such disaster relief operations? The design is fairly straightforward.