Didn't you say you had to move your cleats back from pain? Anyway. Just to clarify, when I say stretch I mean keeping muscles supple, and in their best length-tension relationship through a variety of techniques. 'Myofascial release' would be a better term, but people got angry when I used big words. Campag, I've watched my mechanics they're fine. It's just certain muscles need training and strengthening. I understand you are a very experienced cyclist with a large body of cycling knowledge, that is obvious. But it is also obvious that you don't know a whole lot about how the body works. What you have learned, you have only learned from a cyclist's perspective through cyclists eyes, and likely from a cycling company trying to sell you something.
I doubt you have worked with, shadowed, and learned from professional sports and physical therapists that rehabilitate soccer players, runners, weightlifters, amputees, recumbent cyclists, volleyball, and post-surgery patients, and the list goes on. I have. Really not interested in your 'opinion' anymore. I'm glad other people are more open minded.