I'll admit from the outset here that I don't have all the facts for the arguments going on, but I will just comment on the first part of your reply there.
I don't think you fully grasp how much anabolic agents can do, especially for elite level athletes who have mostly exhausted all of their natural muscle gaining potential, and are only getting older with declining hormone levels and increased time to recovery, with a higher tendency for injuries. A "six week course", I'll assume you're referring to a PED course, can, and will, alter your body significantly, and forever. When you take an anabolic agent and train through any type of high muscle stimulant activity where muscle myonuclei are recruited, that myonuclei stays in the muscle forever - this has been studied and proven a number of times, so you can look it up. Just because Person X took a cycle of something for 6 weeks and was still a dud doesn't equal an argument - everyone responds differently to different compounds, and there's factors at play like diet, sleep, stress etc.
I see your argument there, and I can see where you're coming from, but you cannot deny that anabolic agents work just because a player didn't get better. A small amount of EPO for a player would make a monumental difference to their endurance - a small amount of testosterone would make a huge difference for endurance and muscle mass, etc.