> it's a complete myth that some people keep pushing for whatever reason.

I think it's simply because the top cyclists are now blowing the performance of doped cyclists of decades past out of the water and people get suspicious. I personally think huge advances in nutrition + altitude training are making the difference, but I understand people being suspicious especially in this sport.

I agree with you, btw- I've yet to see anything proving conclusively that this form of doping even exists.