Armstrong destroyed Filippo Simeoni's career in punishment for speaking out over doping. He sued at least a dozen people for defamation, in many cases successfully; he has so far escaped criminal prosecution for his rampant perjury.
Armstrong is resented not because he was a doper, but because he was an aggressive bully who fought tirelessly to protect the culture of doping. Armstrong had no respect for the sport, and we have no respect for him.
https://en.wikipedia.org/wiki/Filippo_Simeoni https://www.youtube.com/watch?v=taWGQNKUgQQ https://www.indexoncensorship.org/2012/10/lance-armstrong-li...
Here's an old (2012) infographic that illustrates how many of the top finishers in previous Tours have been caught (or otherwise implicated) doping: http://www.nytimes.com/interactive/2012/08/24/sports/top-fin...
http://www.amazon.com/gp/aw/d/B008WOUJQG
I think you'd have to be crazy to dope now, after Lance's fall from grace. My default opinion is that systemic doping isn't happening and I'll be really sad if it is.
Mount Ventoux: 2013: 59m:00s Chris Froome 21.86 km/h Such a time is not possible undoped. See e.g. http://sportsscientists.com/2013/07/froomes-first-mountain-p...
But same as Armstrong or Contador only the best do it the best way, and will not get caught for some time.
Whether it’s likely is a different matter.
Team Sky have invested heavily in technology, which includes many significant improvements to tyre rolling resistance and drivetrain losses - someone riding Froome's Pinarello would need about 30w less power to equal the performances of the 1990s.
Course profile is also highly significant. A rider who arrives at a major climb with low lactate levels can remain above threshold for longer and sustain far higher power outputs. Without taking into account the parcours and previous attacks on the day's stage, any comparison is meaningless. Again, technology plays a significant role - Sky have been criticized by many fans for riding by the numbers, precisely pacing an effort for maximum efficiency rather than attacking and counterattacking. This kind of data-driven pacing simply wasn't possible during the Festina era.