Sport is about watching and enjoying supernatural performances. We want to see athletes who are on a god-like level doing things we could never do if we spent our entire lives training for it. We don't want to watch versions of ourselves crucifying themselves up a Col, vomiting on the side of the road, face so red they look like they're about to have a heart attack.
But we also want a clean sport, no doping, no fixing. We need to be able to suspend our disbelief when watching these performances, when our instincts tell us this can't be feasible. So we need a story, a yarn, something to silence that voice in the back of our minds.
Team Sky were brilliant at this, announcing upon their arrival 'cleaner than clean', throwing huge money at it, and of course that absolutely brilliant marketing slogan 'marginal gains'. How did Froome manage that performance? Must have been all that money and the marginal gains. But they were very clever not to push it beyond these realms of plausibility, the smoke-screen was effective, and most likely just micro-dosing.
Armstrong was a different animal, he used the sheer power of his character to silence those around him, and cleverly used his recovery from cancer as a tool of deflection. How could a cancer survivor jeopardize his health by doping? It was nonsensical, although, well, you know.
Crucially both had powerful partisan press at home defending them, and a lot of other powerful financial interests too. Pogacar at the moment has little of this and is therefore drawing a lot of suspicion and fire. He doesn't have a convincing enough back story or history, and Slovenia doesn't have much influence in world cycling. He was good at youth level, but wasn't destroying everybody all the time as you would expect the youth prodigy to soon become the greatest rider of all time to be. The only trump card he has is the money and influence of a corrupt and extremely rich Gulf state, and perhaps the 'see no evil' stance the UCI may have at the moment.
For my money, Pogacar is doing something untoward. But whether he is or he isn't, he will need something to help the viewers and fans suspend their disbelief at his performances or they will begin to switch off in their droves. Simply saying 'they're testing me so it's all kosher' is not a strategy that will work. There is of course the possibility that he gives zero shits about what people think.