Sounds like a crock of s*it to me. I think an AME should be able to tell if you're fit to fly or not by a medical examination, not by questions about what you fly. After all you're more likely to have a hypoxic incident in a 'simple' Cessna 172 at 12,000' than you are in a King Air at 25,000', and you're also more likely to to have one if you're an unfit fat b**tard as opposed to an olympic cyclist...And a doctor will ALWAYS advise giving up smoking
Cheers
EA