'RF4' whilst I can see yr beliefs as being true to some degree I cant subscribe totally to it all. As I am sure you know the basics of flight are no diff from an A380 to a model plane just the handling of that energy which is wildly different as well as the vast implications of Re (Reynolds No's).
Most likely the author of that statement 'same as flying a glider' or words to that effect had good intentions but it was probably not a good comparison in this case.