Are boxer who moan about "not getting the credit they deserve", insecure?

I always thought all boxers were secure with themselves, as boxing is a tough brave sport where your fighting for a living, how could you not be secure if your also winning, your the man! but i remember floyd moaning before about not getting the credit he deserves for his wins, and jealous of mannys popularity but now thinking about it, this is a clear sign of being insecure with yourself, who give a f*** if noone respects your career, if your happy with it, who gives a f*** what anyone else thinks hmm