You're literally referencing less than 1% of guys who use. You're talking about guys over 50 who use responsibly under medical supervision. The ''average'' user is 30-40, never got close to elite numbers drug free and just pumps up high dosages like a retard. I personally look down on people who are users.
That's the issue with internet experts. You claim that for some casual guy with average genetics, who doesnt follow any programming, a 405 squat is alright. You have to realize that less than 1 man out of 100 (regular gym goers) squats 405. I don't know who are you comparing with, but certainly it's a very distorted view of reality. Tons of people claim 405 squats online, yet they are almost impossible to find IRL.
If your reference point is based on people who 1) use drugs, 2) devote their entire life to powerlifting and 3) have elite genetics, you will always have a skewed perception of reality.
Most competitive powerlifters are drugged up, that is a fact. The sad part is, some still have mediocre lifts. Also, I don't powerlift, I sure hope they are better than me at something I don't do. I don't care. Just like they probably don't care that I have a superior 5k time, am better at calisthenics and could toy with them in a ring, because they don't train for that.