Not sure what your definition of "younger" is but I am 38 for context.
I 100% disagree with you. I've bought 5 cars but every single time I couldn't stand talking to the salesmen. In every case I had done my research and knew more about the car when I walked in the door than the salesman. Also, in every case I was told incorrect information about the car or when I asked a question the salesman didn't know. Really, you don't know the size of the engine on the car you are selling me?
Also, the biggest problem with direct contact is TIME. The Tesla took me 5 minutes to buy online, 10 min of paperwork for my loan and approvals online, and under 30 min to pick up. The fastest ever purchase of my previous cars was 1.5 hours and that was only because I had a connection and the dealer had my car ready when I arrived. I still had to go through the creepy finance dude that tried to sell me a car alarm, under coating, paint coating, seat special spray, and the oxygen inside the car so I wouldn't suffocate.