The article says that he was 5’5”. He had acromegaly, not gigantism.
His growth abnormality was just getting started.
Interesting that he was buried face up.
And then there's this...
A few aspects of the burial were “interesting,” however, including the fact that the man was buried face-up, instead of prone, and with his head oriented north rather than the west, like most others interred in the mound.Those who buried him thought him to be from either a different tribe...or a different specie.
Nephilim.