We aren't (at least I'm not) trying to indict particular athletes a la the anti-doping organizations - we're simply being realistic about the endemic reality of cheating - cheating in many formats.
I've been around college prep students, I've worked for municipal government, I've been a cheater and have spoken to and had former cheaters confide in / try to uplift me when I opened up to them, and I've been involved in bodybuilding forums both as a lurker and as a user of PEDs.
While I did not use PEDs while competing as an athlete, and while the PEDs I used were very ineffectual for performance enhancement, and rather taken as a last ditch effort to try to force height/ clavicle growth at age 21 & to augment my appearance, many of them were on banned substance lists. These include growth hormone secretagogues (subcutaneous & oral), misc peptides (TB-500, BPC-157, GHK-Cu, and melanotan), as well as flurbiprofen (NSAID labeled for ophthalmic use but also rodent studies showing long bone growth) and aromatase inhibitor (exemestane, labeled for ER+ breast cancers with the capacity to reduce estradiol up to 75% and increase FT as a side effect by up to 50%).
I went to a Christian prep school with lots of kids who went to parties to drink underage. Some peers used drugs. Many more peers began these behaviors upon leaving to go to college. I was one of the few naive abstainers and losers of my school who never got any play or used substances, never went to parties, etc.
Nonetheless - I have had a good breadth of experience in life seeing time theft, skeevy self-serving behaviors in retail and at Amazon, various forms of academic integrity violation, various forms of cheating in relationships, and lots of doping, at least within the online fitness community and typical gyms at which I've been a member. People do what they can get away with, generally speaking, and this is probably more pronounced in competitive young folks whose PFCs are still cooking.