About your last example, I wonder if it may be related to the fact that the boat was in the Blue Water Rally? This rally keeps up a pretty relentless pace and the boat mentioned would be near the bottom of the fleet speedwise. Would be very wearing on the crew, especially people in their 60s (and I am in my 60s so not a knock) since the port stays for rest and repair are much shorter than for faster boats in the fleet. Also might encourage the slower boats to push too hard so they get to port sooner. I understand that the Blue Water Rally is no more - don't think it is much of a loss.
Finished the circumnavigation in early February in Grenada. Have to work on a book project for the next several months so the boat will be waiting for next year.