Originally Posted by CoachSuzanne
Sun Yang's stroke is much more teachable and sustainable for the majority of swimmers, especially adult onset swimmers.
The truly "sustainable" swim stroke is one that is tailored to the individual swimmer, and which facilitates both optimal speed and joy in the process. That
is why Janet Evans is still swimming in her 40s, and still qualifying for Olympic Trials.
Personally, I do not find it joyful to practice a stroke that is ill-suited to my body. I am neither a 6-foot-6 Chinese man, nor a 5-foot-4 woman with a million dollar smile :)
It's true, though - an individually tailored stroke is less "teachable" in a mass production setting.