What does thick or slim even mean, these are ill defined terms that have different meanings not just between decades but also between different groups of people. What i understand is that when dudes say thick they mean shapely with fat on the right areas, mainly ass and hips. I think female proportions have gotten more outrageous as medical sciences have advanced. Beauty is in the eye of the beholder a woman with an outrageously big ass and thin waist isn't necessarily sexy and wanted by ALL men.
Kevin is just saying most women are asking for a lot when in reality they don't offer much not just in looks but in other areas of life as well. However when it comes to looks he's got it wrong because everyone has different tastes. Look at Bezos cheating on his wife with that spanish milf who's at best a 6.5/10 as an example. Is she sexier than his wife, sure but I'm sure Bezos could pull a much much better looking female.