I think people are quick to judge cyclists at the end of a race, personally, I don't pay much attention to post race interviews... I don't believe the riders have a responsibility to talk to the media after the race. It's not their job, and I highly doubt any rider would sign a contract stating that they MUST give post-race interviews.
From a journalist's perspective, I think they would be better to all stand back, but it's a bit of a prisoner's dillemma problem, so the worst outcome (all journalists hassling riders) will usually occur.
Say there are 5 journalists, all pushing for a post-race interview. Clearly, the best outcome is for all 5 to sit back, and wait for the rider to speak. But if all 5 wait back, there is an incentive for ONE journalist to then get closer to the rider. Given this individual incentive, there is the same incentive for ALL journalists, so, they all simultaneously push close to the rider to get the prized interview.
Personally, if I were a pro (or should I say 'when I turn Pro'
) I would just let the media know, give me ten minutes, and a little space, and i'll answer your questions. If they don't give you space, then firmly say "NO INTERVIEW FOR YOU!!!" (ala Soup Nazi episode on Seinfeld)