Why don't we compare the 18y old cheerleader flyer who is 5'1 with abs and a petite frame to her 5'6 normie sorostitute friend? The latter has much higher fecundity, the first may or may not ovulate (so low if not zero fecundity).
What are you trying to argue, that all else being equal the girl with abs would be viewed as more attractive? I am skeptical of that. Anyways, what % of college cheerleaders would you guess are too skinny to ovulate. I would guess it is somewhere around 0%. But I admit this is just conjecture. This is outside my knowledge wheelhouse.
Apparently 28 and 28% BF is "young and thin" in your world.
I donno about "young and thin." But I just did a quick google search of BF% (cause I really don't think in terms of bodyfat) and I think the woman in the 30% picture has a great body (but I think she just genetically has a good shape and would have a great body if she was skinnier or fatter too), so guilty I guess.
See your comments on vaccines as well.
What are my thoughts on vaccines? I am curious. I don't think they are as radical as you probably assume they are. Also, I admit I am not as extreme an "antivaxxer" as I was a few years ago.