[andrewflnr]

Let's assume they just have to describe in it sufficient detail to someone with technical skills who would implement it for them.

I'm pretty sure it would still suck because they wouldn't know to translate their intuitive understanding of how to leverage social dynamics to gain popularity with how to facilitate them in software. But it's hard to be sure, and would depend on the latent design skill hidden in your "popular person".

I think most people don't know how to approach software design, even from a UI perspective. It's hard even for professionals. You would have to get lucky with a person who happens to get it intuitively.