We're comparing it to cars with touchscreens, and I guarantee you that the first time I find that switch (parked in the garage), I'll remember where it is later. With a touchscreen, I'll always have to look.

Also, neither a car nor a fighter jet assumes an untrained operator. We can't forget that you get a few dozen hours of practical training before you're allowed to drive unsupervised, and that's more than enough to familiarize yourself with the user interface.

So the question boils down to: does the interface facilitate operating without looking at it, or not? Physical buttons do. Non-shit touchscreen UIs could, but they don't exist. Touchscreens used in practice don't.