As someone who played D1 college football and knows several guys who made it to the league, the PED thing is much more hyped on forums than it really is.
MUCH MUCH MORE interest is in GH than roids.
People are too stupid to really run crazy injectables...I mean there is definitely use but it's short little blasts of just test in the offseason.
The majority of the 6'5 320lbs lineman you see are just that...naturally big strong guys. The dudes who are lacking size are the ones who use. For instance, I knew many more LBs who needed an extra 10lbs to hold up trying to run shit.