Although I don't have the details of all of their research methodology, I'm pretty sure that they did do this.
I don't really see how this study justifies red pill ideology. Fertility is highest in the mid to late 20s, past the time of optimal teen WHR, and the "ideal" female body constantly changes so to say it's evolutionary and not cultural seems like wishful thinking. How are these red pill types explaining the small breasted, boyish figures of the 1920's as the ideal a mere hundred years ago?
If you find out more about this, please do let me know. I'd be interested.