Are you saying that they are doing unconventional exercises? Bodyweight or kettlebells or both? The type of functional strength you get can only really come from bodyweight and kettlebells is what my friend told me.
I mean, what do you consider to be 'functional training'? You talk a big game but you haven't given me my workout routine that Rory does.
I don't know, is this unconventional?-
And approximately zero percent of those athletes were doughy 160lbers well into adulthood.
IIRC, Rory turned pro as a lightweight
He didn't move up to 170 until he was something like 17-18.
I don't know that his extreme size and weight gain occurred as a result of steroids... Maybe it happened because he was still growing?