I don't dispute that from a rational transportation standpoint, the auto's are "better." They perform better and get equal or better fuel economy.
But the purpose of a SPORTS CAR is not transportation. It can be used for transportation, but other vehicles do a much better job of transporting you and your people/stuff from place to place - comfort, utility, features, capacity to carry several people, and so on.
The purpose of a SPORTS CAR is to involve the driver in the experience of operating the vehicle for optimum performance. If you want simplicity and economy, buy a Camry.
My brother-in-law used to work for GM, and he was once driving a Corvette with an automatic trans, in which the transmission casing was made of magnesium. (Never made it into production). I drove it and it drove fine, but WGAS? With an automatic it isn't a sports car.
My truck is an automatic, and my wife gave up the stick a few years ago when she started commuting in heavy traffic every day. But my cars are, and almost always have been, sticks. I can't even imagine why someone would buy a 911 with a slushbox.