How many years now since he last won the Tour? Are people really wasting time and money investigating crap that may or may not have happened many years ago? And for what purpose? Are they going to re-race the 2002 Tour?
Here's the truth: The Tour isn't even half as popular since Lance retired. These are desperate people desperate for TV ratings and so they attack the guy that gave them ratings in the first place.
As for my personal opinion, a cancer survivor winning 7 straight Tours doesn't pass the smell test. But guess what? He did pass hundreds of doping tests, was free and clear to ride, and it's long past time to move on.