That's right. It's not that any of us can't drive the trucks. We can adapt and make them work. The issue is that if you are capable of using a manual transmission as a driving tool, this transmission poses serious limitations. The limitations erase many of the advantages that you buy a manual specifically to get.
It's an ECU thing, partly for emissions and partly to control fast changes in pressures.
I agree that it takes some getting used to, but it's sort of the way of the future - my co-worker's 2010 Honda does the same thing. On the plus side, it makes clutchless up-shifting a breeze.