'most tested sport' doesn't mean anything really. isn't athletics heavily tested?
don't sports people take drugs in the view that they can get an advantage without getting caught. the point above would suggest that cycling being so heavily tested should mean that nobody takes anything dodgy, which isn't the case.
https://en.wikipedia.org/wiki/List_of_doping_cases_in_cycling
isn't the reality about drugs and sport that no one really knows who is, isn't, might be, might have once dabbled. it's a leap of faith sometimes based on nothing more than do we particularly like this person and/or their nationality/team. the leap of faith is easier
if you don't suspect the governing body of being corrupt and prepared to cover up positive tests either for individual gain or 'for the good of the sport' - ie credibility with the public, access to funding. regardless, it's still a leap of faith.
imo better to have innuendo and if necessary 'reasoned' allegation than blind pretence that everything is ok. it's immaterial anyway because you will never stop the innuendo, no matter how unpalatable it seems.