Seems the novelty VW engineers had to be reminded of the first item in the Unix philosophy:
Make each program do one thing, and do it well.
Buttons already had this. Each single button did one and only one thing: Turn a feature on or off, or in the case of the radio, switch stations.
We didn't need complicated menus to navigate. Press the appropriate button, and voilá. It was simple. It worked.
Who the fuck came up with the idea of having to use touch menus? I have no idea, but I really hope they got fired.