See I had the opposite opinion.

I see a boat with huge bows stuffing it and stopping. This is ok on our small beach cats when all we need to do is let go of every sheet on the boat to unload the rig, but on a wing sailed boat controlled by hydraulics I think its a problem. Remember how when the Extreme 40's used to pitchpole every other minute? Speaking to the sailors on those boats, it was because to sheet the main on those things you had to pump a handle and to let it out you hit a big red button... and it let the main out SLOOOOOW ressulting in pitchpoles that to us look completely avoidable.

On Oracle, the hulls will certainly drag the boat but I don't think you'd see the same kind of dead-stop you saw on the ETNZ boat.

I could be wrong, but after sailing a boat with big bows now for a couple years I can tell you that they help, and hurt.