Sometimes I don't know whether to laugh, cry, get angry, or throw up. Talking nonsense at slow speed and in great detail might make it seem more persuasive, but doesn't make it stop being nonsense.
Sure. If someone trained in anatomy made incomprehensible mistakes so basic as to render him completely incompetent, then, yes, an idiot could misconstrue a normal skeleton as that of a seeming giant.
But no archaeologist, by making those same mistakes, ever reported that the average size of Adena people was over six feet. Do you know why ? I do. It's because they reconstructed the remains of the average sized people accurately. Which, in turn, makes the contention that they only became clueless idiots in special cases an absurdity that refutes itself without having to disturb Dr. Ockham's slumber.
Nor does it explain how scores of archaeologists and medical doctors over the spans of 150 years and thousands of square miles could all have been identically incompetent in selected, special cases. (Doubling down in the initial claim).
Nor does it account for the ability of normal sized excavators to wear the giant skulls over their own heads like football helmets.
Nor is it any more credible to allege that, because there were liars and hoaxers then (there always are), that every otherwise credible writer reporting first-hand knowledge of giants was a liar and a hoaxer. Need that modeled ? One of my inmate clerks was doing fifteen to thirty years for murder. He was a Steelers fan. My neighbors are Steelers fans. So they must be murderers too, and belong in prison with him.
Spaghetti logic crap like this passes for reasoned arguments only to True Believers, to whom (as to all Believers) facts, logic and even personal experience are irrelevant if these call their Belief into question.
In over 150 years of recorded history there is no mention of them being giants.
Try paying ordinary attention before mounting the pulpit. Even ignoring their skeletal remains, John Smith saw them at Jamestown, live and in the flesh, and reported that some of them were, indeed, giants. You have the whole picture completely screwed up.