That was my interpretation also but there seemed to be varying other intrpretations. I think he was saying, "If you have boney knees or other things that won't look good in that style, do you really want to wear it just because it is the current style?"
I suppose this could be debated about. Being an older dog myself, I think I can sympathize with my counterparts of the fairer (more or less) sex, who want to remember their youth with the associated garments. As long as it isn’t something utterly ridiculous like diapers that show. But I’m not a particular sex fiend, so YMMV.