I call bullshit/COBOL.
In the case of software engineering, more code isn't better. It's always better to spend some time making a good design, which are almost always smaller in code than worse designs. Typing a lot creates a lot of code to maintain. Unless you are coding COBOL or using an ancient development environment, you shouldn't be typing that much. If you truly would have increased performance as a coder by typing more quickly, you are indeed very special, I've never met a coder who wasn't a total newbie who had typing speed as the main bottleneck.
Also, the typical keyboard layout, at least here in Norway, makes "touch" or any derivative of it almost useless. Open curly brace (which is quite commonly used, I imagine) on a normal keyboard here is Alt-gr and 7. Close curly brace is Alt-gr and 0. Considering the extremely high frequence of use of these characters, slightly slanting the hand and making it dynamic instead of keeping it in a typical static "touch"-position not only increases throughput from brain to compiled code but shields the body from stress.
Looking at how Visual Studio presents the editor surface to a coder, the following keys are used in the extreme: open and close curly brace, dot, open and close parenthesis, enter, space, cursor keys and control. I'd say that with the current level of code completion, macros and intellisense these keys are probably used as much as most of the other keys combined. And keep in mind, most of these keys aren't even present on the keyboard the touch system was invented for. It really just doesn't make sense for coding performance to go through the roof with touch typing.