True, but I think you might be shortchanging groundschool and simulators. I can learn more in one hour practicing engine starts and starting malfunctions in a simulator with a good instructor followed by ten actual engine starts than I can in a hundred engine starts and no sim time.
Well argued points, but I think I still disagree. You can never substitute the smells, the difficulty reading that gauge down there because the reflection is bright, the interaction with line personnel, the buzz of radios and ICS in your ears, knowing that there isn't a "reset" button, the sense of responsibility to get it right because people are watching and listening. These things you don't get in a simulator. I'm not saying that simulators don't have value, of course they do. As you've stated, they are good procedural trainers - just that though, procedural trainers, not experience getters.