Attitude, Human
Nothing personal, but the a/c in question possesses many of the Traits disdained by the twenty-somethings "flying it". Arrogant, Proven, Brook no deviations, No questions (My computers are quite competent, thank you.)
"I have three ways to fly, get right with that, etc." It is that regimen that irks those who flew before the digital age. Not having experienced that, youngsters compare seasoned flyers with their a/c, one approvingly, one disdainfully? If I were to fly with a Captain possessed of the (human) traits the Bus displays, I would not be comfortable, see?
AF