OTUSA did have a foil trimming device on the boat which explains how steady she was. Here's a quote from Sail World:
"The following notes are circulating in Auckland media circles, as an explanation for Oracle Team USA's improved foiling performance, as time progressed in the 34th America's...
Sure it's a spectacle, but it's a Sailing spectacle. It may not have any relevance to the way each of us individualy sail our boats, but it is a part of the sport and should be enjoyed as such IMO. There may even be some trickle down benefits to all of us in the form of materials, equipment...