absolutely, you can be a genius in the ring and a moron outside of it or vice versa.
in fact ring iq is one of few things you have to learn, it doesnt come down to talent. some fighters pick it up easier than others but at the end of the day they all have to watch tape and study their craft, you arent just born with knowledge of how to fight.
in this sport you never know it all either so you never stop studying. even bernard hopkins who is one of the smartest boxers in the game admits hes still learning at 47, the sport is so vast and complex you never stop learning.