He didn't clean out a division
He never defended a title
Since he moved up a weight he has won twice (once was a very close fight) lost twice (and got absolutely outclassed in one of them to an embarrassing level) and got the easiest fight imaginable against UFC's biggest bottle job.
There's plenty of fighters better than him, he could possibly argue he's Europe's best fighter in fairness to him but other than that I doubt many class him as one of the best, including himself.
Again he does it for people to talk about him and it works cos were doing it now! Nothing wrong with that always interesting conversation just find it funny people get worked up by it.
He rinsed 145, lets be honest. Went up and won a title, won a few at 170 as well.
Look, I hate Conor as much as the next man but an avenged loss v Nate and a loss v the best 155 of all time doesnt diminish what he has done. He just doesnt win fights, he wins them in dominating fashion and usually in round 1 or 2 and against high calibre opponents.
Hes provided the most clean drug tests than any fighter in history, he isnt shit scared of losing like Jones who has looked like shit off the juice. He isnt content to weight bully like Khabib and actually face fighters without his usual advantages.
Honestly, I think he takes Tony and Justin at 155. When its all said and done there will be no top fighters he could, and should, face and the chance is there to ram home his accomplishments.
Im not saying hes the greatest ever but he is up there in that bracket.