In my case I suppose that depends on what you mean by knowledgeable. I'm sure I know far less than Mcvey, Seamus, or Janitor, but significantly more than your average pay-per-view-purchasing boxing fan. I haven't followed contemporary boxing closely for some time, but I'm reasonably knowledgeable up to about the early 2000's.
Of course he hasn’t. The guy wears a tin foil hat. Data collected from the federal Centers for Disease Control show that average height for Americans has stabilized in the past 50 years to about 5 feet 9 inches for men and 5 feet 4 inches for women.1% of American men are 6’4”. "We've pretty well maxed out in terms of stature. There's been little change in adult height over last generation," says William Leonard, an anthropologist at Northwestern University.
Mike Tyson is the H2H GOAT at heavyweight, even if he wasn't the GOAT in terms of legacy or longevity or anything else.
Check out the thread where it lists Duran's weight for his fights. You can clearly see, he would balloon up and down in weight because of his habits in between fights. This goes against your notion that he moved up in weight simply because he got older and it was the natural progression. You can clearly see he took fights above 147 a few times while still LW Champion. He couldn't make the weight, but they wanted him to be active, so they took the fights they could. That certainly doesn't sound like Duran naturally moving up in weight as he got older. Quite the opposite. Again, you keep saying he beat NO great fighters. First, he beat SRL, so right there makes your statement null and void. He did beat great fighters. I would also label Ken and Dejesus great as well.
The wide held belief that George Foreman would have destroyed Mike Tyson if they had fought in the late 80's/early 90's is utter nonsense, absolute bollocks. Tyson would have landed close to every punch he threw just as Holyfield, Moorer, Morrison and Alex Stewart did, hell even a washed up Qawi was landing plenty.
TI can make excuses for Hearns loses and anyone else. All fighters go through that. How is he different. He is paid to get in shape and if he was not in shape, I don't want an excuse. I would not rate Buchanan an all time great, that is making him great so Duran gets credit? Or was Buchanan really great. DeJesus? I would say Benitez is greater than DeJesus, since they are in a way related to each other. so you want me to check out the list to validate the excuses made for Duran? Where is the list of weights for all the other fighters for their excuses? Can they get a pass also for losses against greats? Do other fighters get these same considerations? I don't see how Duran having bad habits means anything to his losses, same as we can bring up Davey Moore having 11 fights and dental surgery the week of his fight. I don't say that, he knew what he had to do and he lost. Duran was paid to be at that fight and he made other fights with Moore and Barkley in shape, so fighting Benitez or Hearns or Leonard out of shape is not something I buy, and if it is true then this does not show great boxing IQ. Does it? Fighting the best fighters he fought ever and he is not in shape. No, I don't accept it because I respect the sport, and if we put one fighter above the sport then that is not fair to the sport, and I don't see how anyone else does. If anything, if he was not in shape because maybe he knew he would lose and wanted an excuse because he knew those guys were too good. He knew. Why would he not be in shape for a Thomas Hearns or a Wilfred Benitez? Duran made weights fine just like any other fighter struggles. Somehow his struggles mean more than other guys who have the same problems. That is my issue. I repeat, I don't think he beat many great fighters. No, he lost to all the greats in the 1980s. That is a fact. and his fans counter with excuses. His lightweight reign was solid and he was dominant, but those guys were not guys which would get him top 10 ATG.. I said he was great, I just never thought top 10... top 30 yes.
It's just because there are more of them dude, so they seem to be of a different flavour. I agree with the guys saying fandom is bias. I agree with that. But you should fight it all the time. Actively, inside yourself. Or, nah, that's excessive, it's not necessary if you're just enjoying the forum and some chat and some reading. But if you're very serious about it.