To analogize what you're doing via a sports metaphor (let's choose basketball), you are practicing dribbling. That is all you are doing. No footwork, no passing, no shooting, just dribbling. You have never even played a full game of basketball in your life. Yet you are bemoaning the fact that no professional basketball players want to listen to you lecture about the importance of practicing dribbling.
I think what you have been missing (or
actively ignoring) fact that slow-speed maneuvering practice is a small piece of a much larger puzzle. It's an important piece, yes, but it's not by any stretch of the imagination the be-all and end-all of two-wheeled physics. By treating PLP like it is and putting it on such a pedestal, you are actually
greatly hurting yourself by willfully disregarding the rest of the puzzle. You police bridge-stop crash was a
perfect example of this: since you didn't have any
practice operating outside of a small, sterile environment, the addition of a few variables that shouldn't have needed a second thought caused you to wipe out completely.