One good reason to ban discussion is because pretty much NO ONE knows what they are talking about. Without discussing the issue, here is a neutral example:
For example, he never did drugs (he was the most drug-tested athlete in history). He was NOT accused of taking drugs. What they are accusing him of is blood-doping -- taking his own blood and then putting it back in. Those sorts of things. Not steroids, not stimulants, none of that. See? No one knows even this. So why discuss anything about whether you think he "did" or not -- or anything else??
Anyway, yes, lets not discuss it. I got the impression all his teammates and everyone else was doing it (too?) anyway, and he still beat all them pretty bad... so what is the point? It is just a stupid, stupid dismal media circus and a sad thing.
Moving on.... I for one DON'T like to discuss this issue and would advise people to stay HERE and not discuss it!
It is cool that Lance seems to be a good runner though. I like that.