It's not just some of us bone head sailnetters that think the AC 72's are too dangerous:
"AC 72 Safety Controversy
On May 9th 2013 the Swedish team first AC 72 flipped in the second overturn of these boats in under a year resulting in the death of olympic medalist Andrew James Simpson, one of the members of the team. He was a British sailor nicknamed Bart who had won a gold medal at the 2008 Summer Olympics in Beijing, as crew for skipper Iain Percy in the Star class.The AC 72 capsized while sailors were training Thursday in the San Francisco bay just north of Treasure Island. According to media reports structural damage may have been the cause. Emergency crews performed CPR on one of the sailors, according to the San Francisco Fire Department. Ten people on board were transferred into an Oracle Racing support boat.
Investigations into the incident will be led by the U.S. Coastguard to determine whether this was an isolated incident or if the current America’s Cup safety regulations are sufficient. This was the second of the new 72-foot catamarans to crash in training.
The power and speed of the catamarans used in the America’s Cup, rather than traditional one-hulled boats, has attracted criticisms in the past after Sir Keith Mills cancelled his British Team Origin campaign for the 2011 event, due to concerns over safety. Stephen Barclay, the chief executive officer of the America's Cup Event Authority, has promised a full inquiry into the events which led to Simpson’s death and has refused to rule out the possibility of postponing the July 4 start of the Louis Vuitton Cup series, which determines the challenger to compete in the America’s Cup. The future of the 2013 America’s Cup was put further in doubt after Patrizio Bertelli, the owner of team Luna Rossa – who are due to compete in this year’s race, told organisers he was considering withdrawing his team from the competition on safety grounds."