Without wishing to prolong the discussion I missed one point in my rather hasty reply.

You state "I can only speak about what I have seen". There is a saying in academic enquiry "A way of seeing is a way of not seeing". In this context, if you going looking for damaged boats - and where better to look than a boatyard where boats are repaired - you will see damaged boats. However, what you will not "see" is all the undamaged boats in the yard, nor all the other boats happily sailing.

We both mention the paucity of information on failures. I suspect that this is because there are so few! We have classification societies (Lloyds, ABS etc) that set design standards and approve designs and construction; we have statutory bodies such as the MAIB; we have organisations representing yachtsmen such as the RYA and the ORC; we have large charter companies owning and running these boats all over the world; we have an active and independent specialist press; we have insurance companies that pick up some of the bills for failures. None of these seeem to see a problem on the scale you suggest - or is it a conspiracy?

None of this of course stops you from holding an opinion, but please don't generalise from a specific.