I'm not posting to start an argument or to be different, but you all seem to be suggesting these boxers are cheating, cowards or doing something illegal.
Everyone can't wear a championship belt--unless they keep adding belts--so the managers and promoters are always going to be scheming every way they can to get their fighter as close to the top as possible and to keep them there as long as possible. The top is where the big money is.
Boxing is a business and business is about money. My point is that most of these fighters you are bitching at are not in full control of their careers