Earlier quoted context omitted.
Imagine it they would've done a female styled version, and got Kim Kardashian wearing them? Why is that less legitimate? The parent is being downvoted because of the implicit criticism is that a female-first targeted rollout is a mistake.
I think the parent would have drawn the same criticism if the exclusively marketed towards men. I think his point was simply that their marketing misses 50% of the market. His point is not that it's wrong to only market towards women, his point was that it seems weird from a revenue perspective to only market to to half the population.
If Spectacles take off, they can always "grow it and bro it" later. Starting off with a focused target market seems like a reasonable approach to me.