A car needs to work all places people drive and for all people in all circumstances. There are multiple other shortcomings to voice control that have been described repeatedly.
Yes, you can ask that question to any of the thousands of drivers who get in accidents every day because they are distracted. Good UI design for a car means minimizing the time you look at the screen. Compared to V10, V11 did the reverse.
you say that like having screen redesigns is automatically good. If it makes things better it's good. If it makes things worse, then it's bad. Having major redesigns on a regular basis is also bad because you repeatedly make people re-learn how to operate their car. Most of us want to use our cars, not learn them.
Ah, but you are wrong - that is not 'flexibility.' See my previous paragraph.