I don't think there's any reason to target a specific rider unless you have information about what he might be using, which doesn't seem to be the case here.
Cadel Evans and the guys of his era, and those before and after as well, used EPO, blood bags and cortisone among other things, but nowadays we can't be sure what's going on. Are people up to same old tricks or have new methods replaced the old ones?
The only thing I know is that the riders aren't to blame. The problem is the system which has been build up over the years by teams, national federations, the UCI, the anti-doping authorities, doctors, "doctors", media etc. which has allowed it to reach the current state. But this is obviously not solely a cycling issue. It's the same in other sports, too.
Jonas Vingegaard is simply a product of that environment, but he could just as well have been an American named Joey Wingfarm or a German called Johannes Flügelhof.