What if there is no ‘primary cause’ that can be fixed, while still solving the underlying need the country seems to have - which is ‘have a large standing group of highly trained, extremely focused, non-conformist, insanely competitive, and professional killers ready at a moments notice’?
It’s not like the mere fact of creating/concentrating the population of the folks willing to be this doesn’t also create a whole swath of secondary effects.
Since after all, if steroids and similar PEDs do actually improve performance - which we wouldn’t be getting worked up about them this way if they didn’t! - then isn’t using them nearly a duty of the folks we are talking about? After all, mission first, and they’re (somewhat) expendable due to the nature of the work.
We make them do all sorts of other things which regularly puts their lives and health in danger, after all, and all the ‘high speed low drag’ folks I’ve personally known have had some kind of long term health impacts. Even if it’s just a lot of joint pain, or screwed up knees/backs.
And barring undesirable secondary effects, isn’t it saving lives and accomplishing missions that otherwise would not be? That is what they signed up for, literally. That and having the absolute craziest stories at the bar later.
note: professional bicyclists and weight lifters will also always have a doping issue that needs mitigating. Well, mitigating if we care about their health vs absolute performance anyway.