I don't change the AC while I'm in motion. All my cars have auto AC so I rarely touch them even as the temperature changes outside. I probably adjust the AC a handful of times a year. I'd rather not waste a lot of dashboard space on buttons that practically never get pressed, I'd rather have my map be even bigger and easier to quickly glance at and have more space to browse my media collection while stopped.
I don't understand how so many people have come across cars with seemingly terrible auto AC systems. Even my old 2000 Honda Accord had a competent auto AC system. I haven't had manual AC on any of my cars in decades. Whenever I rent a car it's always infuriating having to constantly muck with the AC system.