The consensus regarding automobiles and touch interfaces is starting to form that they are just a bad idea.
Physical switches, knobs, toggles, buttons -- these things can be activated using one's hands without needing to coordinate with sight, meaning, our eyes can stay on the road.
There is no road to keep your eyes on in space though, so needing to coordinate hands and eyes is clearly not that big a problem for the Dragon, and might even be better than lots of physical inputs: you can cram more virtual inputs into the same area by using menus and what not, and that might make it easier to navigate one's way around them. Then again, complex menus might make things worse in an emergency. There's not that much for the astronauts to do in Dragon though, so it's probably all OK.
Physical switches, knobs, toggles, buttons -- these things can be activated using one's hands without needing to coordinate with sight, meaning, our eyes can stay on the road.
There is no road to keep your eyes on in space though, so needing to coordinate hands and eyes is clearly not that big a problem for the Dragon, and might even be better than lots of physical inputs: you can cram more virtual inputs into the same area by using menus and what not, and that might make it easier to navigate one's way around them. Then again, complex menus might make things worse in an emergency. There's not that much for the astronauts to do in Dragon though, so it's probably all OK.