That's not the point. The point is being busted for something doesn't mean it was the only thing they were on, just as not getting busted doesn't mean they are clean. Unless you also believe that Dopador was only using clenbuterol...They were discredited over methods widely accepted as having huge performance enhancing effects. Puffers not so much.
Best I could discern was that salbutamol helps weight loss? It certainly wouldn’t help an average athlete win the Tour de France or the transformation seen at the 2011 Vuelta. Of course there were other theories which Froome wasn’t “busted” for but he was never sanctioned for those.
For the record, I am no fanboy of Froome.