Yep, and all those people are now Internal Martial Arts experts, right?
My point is "modern athletic training" encompasses lots of different approaches. You can't (well you can but I think you shouldn't) say all "modern athletic training" is the same thing. Except, of course, if you are a recognized authority on that matter, but I missed that part.
Knowing theory about how the body possibly works will never equal actual training to create a martial body. But you know this.
Apples have been falling from trees since ever... Who needs to know what gravity is? Who needs science when the shaman can give you the answers? What about the possible uses of IS training in sports performance, medicine, rehabilitation, workplace ergonomics?
At least the "modern athletic training" people are helping to diminish the suffering of another human beings. Are you doing the same?