First reason: they never talk about envy. I was popular enough with women to have been the object of envious attacks from other guys, which they always did behind my back. I've also been the objects of envious attacks by women, who for one thing try to redirect your attention from other women (at the least) to trying to destroy your life (at the most).
And, yes, they do attack "Alphas" and try to bring them down, contrary to the Manosphere delusions nothing happens to them.
The second reason is something I learned from my father. My father was very good-looking - like movie-star good-looking. I didn't inherit it. He experienced the same thing I did, only a lot worse. Like getting into fights.
He told me when I was a kid that when you get hit on the point of the chin you see stars.
He was right. Everything turns black for a second and you see all these little multi-colored stars. The back of your brain, where the visual part is located, bounces off the back of your skull. I've experienced it.
If Roissy and Vox Day were telling the truth and weren't loudmouths, and where as popular as they say they are, and laid as many women as Roissy claims, believe me, they'd be talking about envy. And fights or avoiding them.
But they don't. Never. I wonder if they've ever been in a fight, especially the loudmouth-with-nothing-to-back-it-up Roissy. I doubt it. I really doubt it.