They were designed to go as fast as possible shorthanded - period....Until something breaks, at which point they call for the Ozzie & AnZac Navies to come and rescue them...They are the counterpart to Top Fuel dragsters, not F1 cars.
Your vision about these boats and the comparative reliability of the boats that made the first Challenge around the world is not according with reality.
First of all these are racing boats and therefore the reliability is a compromise regarding weight and speed but they were not designed to "to go as fast as possible shorthanded - period....Until something breaks, ...They are the counterpart to Top Fuel dragsters
" neither they are comparable to top fuel dragsters that are designed to make some hundreds of meters reaching top speed.
Both comparisons are completely off but the last one is plain ridiculous since these boats were designed to win a circumnavigating solo race without stops and no assistance. If you don't arrive you don't win and these boats were designed to do it and win. Quite the opposite as a concept regarding a dragster and even regarding the Paris-Dakar that you mentioned a much more extreme event demanding a much superior reliability.
In fact there are no racing car, including the ones from the Paris Dakar that could make a world tour without outside assistance. Even in what regards a much shorter event like the Paris Dakar, there is no racing car that can make it all the way without outside assistance.
Regarding numbers and reliability on the last Vendee Globe they were 20 and 11 have finished. From them three retired due to damage after collisions with fishing boats or metallic objects, one retired due to problems with the autopilot, another retired (but sailed the boat around the world) after being disqualified due to outside help (when is anchor dragged), two boats retired after having lost the keel another one with problems on the canting keel system and one after losing the mast. Only 4 boats retired with mast or keel problems.
Even if we count Jean Pierre that lost the keel but made thousands of miles without keel and finished the race, the boats that have problems with keels or masts represents 20%, during a circumnavigation race.
Nothing like what we can take from what you say about the reliability of these boats but nonetheless not acceptable neither for me neither for the designers, builders and racers and that's why they changed the rule to make mandatory standard masts and keels, that will not only be stronger but will provide more information to the designers to better them and make them more reliable.
This race cannot be compared, as you have done regarding Sayula II, with the Whitbread Round the World Race for many reasons, the first of them is that while on the Vendee Globe is a solo non stop race without outside help, the Whitbread was a crewed circumnavigation with 4 legs and outside help
and at the end of each leg they could have the boat repaired. Many boats would not have finished the race without repairs and without outside help. If that was a non stop race without outside help none of the two boats that won legs on the race would have finished it. One broke a mast once, the other twice.
Then Sayula II, that was a performance cruiser, not a racing boat only won the race in compensated time that is a thing that does not exist on the Vendee Globe where only real results count. Regarding real time, the Sayoula II was always very far away (several days) from the winners of any of the legs.
Regarding the condition of the boat at arrival the words of one of the crew (Butch Dalrymple-Smith) are very eloquent:
"Although Sayula was well built, and survived the rigors of the race rather better than the others, she only just made it - the standing rigging was in tatters by the end....Finally, when we were certain of winning, I asked the owner, Ramon Carlin, if he would allow me to over-crank a runner and bring the mast down. That way we would finish sideways with the rig over the side, make headlines all over the world, and give the spectators something to tell their grandchildren. He actually thought about it for a long time before reluctantly saying ‘no... because the yacht is not insured. "
Finally in what regards boat's security even if the Vendee Globe is much more demanding, not only for being a non stop race but because it is a solo race, none has died on the last vendee while three were tragically lost on the Whitbread.
I don't think so