I think that 'the wall' is overused and overexploited by most MGTOWs, they basically emphasize too much on women's aging centered on an obviousness that happens in dating since the modern era. Yes, most 20 year old women look better than most 40 year old women, the same thing happens with most men. Sure, you can also find outliers from both genders who are in their 40s yet they look like they still are in their 20s.

I also don't think a good looking 40-year old woman isn't attractive at all, she can still date good looking 40 year old men, same happens with a good-looking 50 year old woman and so on.

Youthful is beauty, maturity is wisdom and most people can't have both, it's just humans being humans.