Well, I don't see what the big deal is with pot, generally speaking, unless you are totally stoned and trying to drive.
disclosure: I've smoked it, enjoyed it, it's not my thing and hasn't been for decades. If nothing else, I don't want smoke in my lungs, I crave fresh air, unless maybe I'm terminal, and even then I'd prefer a really good scotch. I understand pot agriculture is much more sophisticated now (see New Yorker article, Dr. Kush) - or at least is in California.
I read yesterday that the Olympics drug watch folks have mj on a list re not okay during x period, but they don't look for it 'off season'. That's a crude paraphrase, and I've no immediate link.
Now, I can see worrying individually about Michael Phelps, if I were his psychologist, perhaps not for the reasons that everyone else is, but I'm not and the rest of us aren't.
Kellogg's --- it is to laugh.
I'd boycott them, but I don't eat that stuff anyway.
The whole blow-up thing of making Phelps ashamed about a private party enjoyment of pot in a non competitive time period, is, oh man, just tooooo weird.
Don't get me going on legality.