Holmes was the king of not making fights. Possibly the best 160 era ever occurred around the early 90s, but few of those matchups came off.
People forget or choose to ignore but Mayweather had trouble getting high profile money making elites to square off with him for the first half of his career.
yes who could forget Leonard,Hagler was so disgusted he hung his gloves up. Oddly enough if you look at what Hagler and Leonard got for that fight the money outside of Floyd hasn’t really gone up. I hate the A side thing not for the money as that doesn’t impact any of us,moreover it’s the choice of venue with home cooking,bad refs and judges that get to me. If really gone off AJ as a result of this,that said Wilder has his own A side thing going on over everyone else.
Since there are 4 or 5 world champions in every weight class it has made the biggest fights hard to make. The top 4 guys can all be the world champion and duck each other. That wasn't possible back in the day. It's supply and demand. Everybody would demand the best guy if only the best guy had the title. Or else you sit on the sidelines.
Even if they choose to ignore that the man didn't fight a single top young fighter after 2007. That's 10 years in his career where he didn't fight a single legit contender in their prime. So when people say FMJ added nuances to ducking and scheme they may have a point.