Joe is in good company. In addition to those listed at the link above, over a billion people alive use it regularly and roughly half of all living adults have at least tried it. He would fit right in at UO.
What's frustrating is the lack of education about this substance to kids like Hardy. Clearly it's not appropriate to be used in the middle of a meet, and if it wasn't such a taboo subject between coaches and athletes due to the illegality, he probably would have never used it at that time.