In the song, "Magic", Bruce Springsteen says, "Trust none of what you hear and less of what you see".
I am a big fan of Carl DeRosa, own all 3 of the books he wrote with Jimmy Porterfield. Feel he has been misinterpreted by the gurus out there. He did a great editorial in this month's JOSPT. He was speaking of manual therapy, but we could easily apply it to what is going on in the rest of athletic therapy, strength & conditioning, and personal training.
"Practitioners and commentators seem to be intent on deliberately obscuring what we are doing, going far as to create individual languages and terminologies to describe the techniques, understandable only to those who may have undergone the secret training. A cynic might ask how different this is from apprenticing with the sorcerer from the middle ages."