People who pursuit the fashion industry don't do it to dictate what they want women to wear. Celebrities are normal people just like all of us, and they don't wear anything with the intent of trying to tell women what to wear (I know, because my family is in this industry). I'm not sure what the origin is of this belief, but it's not what drives artists to do what they love to do. The fashion industry is only entirely "top-down" if one doesn't want to take part in it and create their own looks (e.g. teenagers on TikTok drive a lot of trends, etc.). That's why I always encourage others to wear what makes them feel good, because how they present themselves may inspire others -- especially if it goes against the grain of what is currently considered "fashionable", since that's how new trends are often created. A lot of ladies here would love to see hosiery become popular again. By wearing it themselves, they are keeping it alive and may inspire someone else to try them out. Regular people have as much influence over fashion (thanks to the internet) as those who do it for a living.In that article, 4/5 ways for fashion trends to get started are "top down", created by people telling women what they should want to wear, only one is a trend set by what actual people wear in real life. So I'd say his statement, while incomplete, is more correct than to say that young women decide on trends themselves and stores just follow that.