And boxing is for guys who can't grapple. We could do this all day.
Boxers don't seem to understand that people interested in only MMA, likely feel that way because they don't care about boxing. When you watch guys with beginner level take-downs close the distance and beat boxers/strikers with ease, boxing loses whatever aura it previously had in your mind. It suddenly seems like a handicap fight, and not how it should be. Boxing hasn't had the luster it once had for quite some time. MMA isn't full of failed boxers. It's full of failed grapplers.
Most failed boxers aren't go to endure the ego implosion that is BJJ/Grappling training.
On a sidenote, Tyson Fury is basically the Tim Sylvia of boxing. He's a mediocre boxer who wins due to having the frame of a sideshow attraction.