I have to disagree with you on a few points
*Offshore racing is much harder than offshore cruising, the blue water experience is greater, not less. Crewing is riskier than taking your own boat out. Lots of unknowns, no matter how much you vet.
*From what I've read, RD and LG seem to have a good handle on sailing a boat. Did they have a stellar performance on this trip? No, but no one could of. They did the best with what they had to work with.
* BTW-as far fetched as some of the story sounds, anyone who has spent longer than a week offshore knows it could totally happen. And anyone who has been way way offshore, would also know that with the complete dysfunctional dynamics aboard, of the likes we see here, it could of been much much worse.
*I think RD and LG got that boat safely to land, in spite of the obstacles.
To gain experience you have to get experience ( genius, i know)
In my 25,000+ offshore miles, twice I have had a captain become incapacitated.
One time was during a storm on a sinking boat, offshore. I kept the boat afloat and on course. At the time, my total sea time was just a couple thousand, didn't know jack. Good crew is not always about knowledge.