The bikes used in the tour de france and stuff are built so amazingly crazy light that they only last a few races, theres been plenty of cases of riders chainstays snapping on a brand new frame in its first race, but at the end of the day, the extra lightness takes seconds and minutes off your time so it's worth it to the riders, especially as the riders don't pay for their bikes. I know they even looked into the way the number plate was attached to their shirts, and the aerodynamics of that saved a lot more time than you would think. All Vincent is doing is the same thing, those few grams could mean the difference between making an up or slipping to bash. He has basically unlimited funds in a bike so doing all this improves his performace and pushes the sport even higher and further. I don't know why everyone has a problem with it. And losing weight on your body doesn't make nearly as much difference as losing the weight on your bike, so saying "lolololol, why buy a new tyre thats 200g lighter, just take a shit before your ride, its the same weight" is completely wrong. A big 16 stone guy riding a super light bike is gonna do a lot better than a super skinny 7 stone guy on a tank of a bike, providing they are the same skill level. I mean, think about it, imagine putting a super light front wheel on and going out and riding on a full stomach wearing heavy clothes, then going out wearing light clothes and fully pooped out, but with a super heavy front wheel, it'd gonna be so much easier with the light front wheel, even if the total weight of you and your bike together are more.