It's legitimate criticism. They bought the car just like you did and if they find it a problem they are well within bounds to mention it. A reviewer that makes good points around this is the guy in the video review below.... you can see as he's driving that he has to brace his hand on the frame of the touchscreen in order to touch the right control. People can say it's fine for them or they can adjust to it but it's still going to be inferior to dedicated controls that you can operate with muscle memory for doing things like adjusting the vents, the mirrors, adjusting the cabin temperature, etc. You can't operate a touchscreen by feel... which you can do with tactile controls. Looking over at the screen will definitely be inferior. Maybe not much of an issue when putzing around town at 40mph... but would be when driving 80 mph on a US highway let alone 130mph on the German autobahn.