but rather their sexual value or dating value from the perspective of the (sort of) median man.

Yep, I can understand that. though his phraseology is very clearly as though it is an inherent value of her worth as a (sexual) person... which is what I found so unappetising.

I also disagree with his valuation. I know from... well knowing 40 YO women (and older), that they do indeed suffer from diminished sexual appeal - but certainly nowhere near zero. 40YOlds get it on all the time... therefore his valuation is wrong. It is limited by his own personal perspective - and that of the average young-ish man who is himself high up on the "sexual appeal" rating.

I can definitely understand that for a man who can "get anybody" - that they would try almost exclusively for younger women, and that therefore an older woman would hold no sex appeal for them... but for anybody not an alpha male... (especially 40-50YO average men), a 40YO woman would still hold some interest.

Her "value" on the marketplace is not zero.