You referred solely to LA and showed little awareness of the wider sport. Can only respond to what you write.
If I had started typing about all the cheating, especially doping, starting with just American sports, I'd still be writing. Also, since this is a cycling forum and not NFL Pro Football, it makes more sense than starting the thread with steroids and drug it makes more sense to talk about cycling. So I chose one shameful doper that everyone on this forum is aware of, to make a point with. Also I'm typing in American English, not "proper" English, that may be a problem too. We've kind of bastardized it up a little over the years.
I got serious about cycling circa 1973, with my first "real" bike, a Schwinn Paramount. Except for a couple of assignments in the military, and a couple of years off with a serious neck injury, I've been doing it since. So, while maybe not the guru you may be, I am at least, somewhat "aware" of the sport.
J.