Not sure where you get that data but according to Statista the top selling car is a Toyota corolla. Tesla model y is on the list but at #4.
Touchscreens probably aren't the deciding factor in a purchase but that doesn't mean that they aren't a problem for users. People just have to decide what features they are willing to compromise on (assuming they have a choice, and touchscreens increasingly are unavoidable).
As a Model 3 owner of 5 years, it's really a non issue, in my opinion. All the basic controls you need while in motion are on the steering wheel. The touchscreen is responsive and intuitive.