I just finished reading the latest issue of NASA’s ASRS Callback. The subject this issue was errors made by pilots flying what are generally called TAAs, Technologically Advanced Aircraft. Most of the errors were attributed to either the aircraft not doing what the pilot thought it would do, or just losing situational awareness because the pilot was busy programming the electronics or trying to figure out how to make it do something.
I’ve been through a couple of ‘glass panel’ upgrade programs and they aren’t by any means easy. It takes time and practice to make one of these planes do what you want it to do. And you certainly are not going to gain proficiency by going out and flying, especially by yourself, and figuring it out as you go.