Yes, I can see how it might seem that way to you. There exist healthy meals not having 100g of "healthy fats".Well I'm glad we agree on something, but it seems to me that salmon, avocados, certain dairy, nuts, pulses, and many other "fatty" foods are a part of a healthy diet regardless of whether you're a bike racer or a bird watcher.
The end result of the peloton's weight obssession is twofold:
a) we're testing and rewarding whose body has the weakest safeguards (not strength, speed, coordination, cunning, or anything else that sport is supposedly about)
b) amateurs assume they're supposed to look like Froome or there's something morally wrong with them (such as a lack of discipline)
This is certainly not limited to cycling. A lot of marathoners bob along with the appearance of a meth addict...
At the end of the day climbs usually decide grand tours and to do well on a climb one needs to be as light as possible. That is what the sport is. Or do you want to add a rule requiring a minimum body fat percentage?
As for the amateurs, I say let us educate ourselves what is good for us and what is not. Most realize that it cannot be healthy to go up and down the mountains for three weeks straight but there are no complaints about that,
Lastly, I never said it is morally wrong to not have perfect nutrition. Having discipline is a part of what makes a great cyclist, great. It can only help one to become faster.