Thats the problem, isnt it.
If you rock up as a newbie and you grandstand about just how clean you are going to be, how you aren't going to employ any ex-dopers be it riders or staff, how you aren't going to let riders on a TUE race, how you are going to produce a clean British TdF winner, you arent just saying something about yourself, you are also by implication saying something about everybody else.
So when it turns out that half your ex-pro staff are ex-doping riders, and some of your current riders are from notoriously dirty teams, and your turnaround moment in terms of success comes after you employ a doctor who masterminded a sophisticated doping system in his previous team, and your star rider is abusing the TUE system in exactly the same way that confessed-dopers did in order to win races (and lies about it in his autobiography) and all this has happenned under the aegis of the national federation because of a strong linkage, the only thing that you can bank on to stop an almighty shitstorm from happenning is the continued ignorance of the general public, because you sure as hell wont get any support from your peers. It speaks volumes that nobody, even his own team mates, are coming out in support of Wiggins, and its pretty clear that the only people coming out in support of Team Sky in general, are ex-Sky riders.
The british public, or at least those whose nationalistic hubris has kept their fingers firmly in their ears in happy ignorance, are being exposed to details and facts that are impossible to glibly dismiss.