Astana are taking the brunt of it because they are so bloody blatant, the performances they are putting in from multiple riders is touching unbelievable and the rumours are flying.
Nearly stripped of their license, got away with it and now look at their perfomance on the GC in this Giro and they are dominating the hilly stages.... Sure they have a team of pure climbers but it's sketchy, nobody can deny that. Plus we have Aru, apparently lost 5kg due to this illness of his and has come back essentially riding the best form of his career right now.
One More Solo is spot on, I don't think this can be put down to the 90/00's drugs of the past. Grey area, new rising products it's a constant battle they can never be that one step ahead of the cheats.
I personally believe ALL the top teams are right on the line of what is legal, they have to push those boundaries and go to the limits of what is legal within the sport to be competitive. The teams with the large budgets, expensive trainers/nutritionists and docs are going to be at the forefront of this. but there has to be a fine line they tread between staying within the realms of clean or crossing over. And from the difference you see in Astana, it seems to me that they have crossed that line..... BUT, what about Tinkof? They aren't exactly nowhere to be found or struggling, they are themselves been dominating the peloton, although not to the extent of Astana but you look at the recent mountain stages and look how many riders they have covering their guy compared to Sky, purely as example.....
I don't believe the sport is clean. But it is nowhere near as dirty as the early 00's.