You can say the same about any other component deployed in the interior of a car. manufacturers have taken this into consideration the same way they do any other component. Whether or not their testing is sufficient to bear out real world use cases is another story but if you trust the buttons in your car to last, you should probably trust the screens to last about as long.The touch screen will be subject to environmental stresses - high heat and extreme cold.
Sure you can. Does the screen not work unless it's being looked at directly? If what you meant to say is that these systems lack the secondary tactile feedback mechanisms that physical buttons do, then sure. but as I pointed out, a poorly designed HVAC/ICE stack suffers from the same problem.The usability is very questionable. You won't be able to adjust anything without looking at it.
Once you know where all the buttons are on something like this w/o looking, you've got the same skill set needed to operate a touch screen w/o looking.