Well maybe popular was a bad choice of word, mainstream would have probably been better. No one I know even knows about FO, even most of my gaming friends on Steam haven't played it lol.
I guess you weren't sat at the edge of your set waiting for any drip of info and you still wanted one, speaks for the games popularity! I also want the pipboy and also didn't pay enough attention to spot it hehe
I think it's a generational thing. Those of us that have been PC gaming long enough to remember it before it was an FPS style RPG have been waiting and wanting it since wandering off into the sunset with Dogmeat in FO3....