To be honest, I don't care one bit about your supposed experience or appeals to authority. I never called myself supremely qualified to judge the game, and am not a troll for thinking Melo is a decent player rather than a superstar (and I'm not alone in that regard). Maybe under certain circumstances I would be deferential to you (out of respect for the insight of my elders), but not when you resort to ad hominem attacks.
He attracts loads of offensive attention, and is a tough cover, but he has never been a superstar. He's a high volume (low efficiency) scorer that doesn't make his teammates better, isn't a good defender and doesn't really do a single thing spectacularly. Teams swarm him, to some extent, because he's a black hole that has difficulty (or a general unwillingness) passing out of double teams. That's improved over the years, but now with age he's a little bit less potent as a scorer. As for his offensive repertoire, no trait he possesses is particularly game-changing: good finisher, decent handle, good mid-range game, decent long-range game. But clearly too much emphasis on the mid-range, a dying part of the court, something recognized by virtually the entire basketball community. Almost half of Anthony shots this year (and over his career it's in the 40's) have been mid-to-long twos, the least efficient shot in basketball. It is demonstrably clear that whatever difficulty defenders may have with him, they do a pretty admirable job containing him to that part of the court.
And I'm sure an open-minded guy like yourself will find his advanced metrics revelatory: all of them (Win Shares per 48, BPM, Wins per 48, etc) reveal him to be little more than a decent player. But, I can anticipate your response already. C'mon, let's hear the guy that disparages other people for their lack of basketball knowledge criticize something he has no knowledge of (metrics).