More than a couple of analysts and players alike have expressed this sentiment. With Melo still looking for an NBA team to latch on to, it's been suggested that he's been blackballed by the league. Royce White, never one to shy away from giving his opinions, has even lashed out at LeBron James, saying that he should be using his influence to help his friend (be it encouraging the Lakers to sign him, or speaking out on his behalf). In the process, White also threw Jared Dudley under the bus, which was a bit uncool in my view.
So, are they right?
I guess there's merit to the suggestion. Mahmoud Abdul-Rauf and Craig Hodges both had their NBA careers cut short due to apparent blackballing, in their case due to their religious beliefs. Melo is a much higher profile player than either of them and there's no controversy with personal beliefs and whatnot, so it seems less likely. Still, there's obviously precedent. It's not completely inconceivable, and it's strange that he hasn't been snapped up by someone wanting to add some extra firepower (and a notable name at that).
At the same time, he's a sixteen year veteran who's on the downside of his career (though it should be noted he was an All-Star as recently as 2017) and hasn't proven to be a great fit with his last two teams. There have been questions about whether he's truly willing and able to accept a lesser role, or if he can be effective in said role. I have to believe if there is a problem then it's with his attitude, because there's no reason he can't still play in today's NBA. He has three-point range, and by the numbers, is just as effective as LeBron from downtown. Note that I'm not suggesting that he's playing at LeBron's level overall, but if he's incapable of playing in a three-point happy league, then by the numbers, LeBron would be as well (which he's obviously not). As far as being a four that can stretch the floor, that is absolutely something Melo could still be. With that in mind, attitude and soured relationships seem like more of a factor than an inability to play the modern game.
If it's his reputation (or perceived reputation) that precedes him, then I suppose that might quality as being blackballed. To that end, however, where do you draw the line between being blackballed and wearing out your welcome, or gaining a questionable reputation? If he has that reputation, then it didn't spring into existence out of nowhere. There's at least some responsibility on Melo's part. Also, when we look at some other stars who suddenly found themselves on the outside looking in, were they blackballed as well? Take Stephon Marbury, for instance. Was he blackballed after the 2009 season too, or were teams right to shy away from him given the controversy and questions about his attitude? As an aside, it's interesting that both he and Melo find themselves out of the league after falling out with Mike D'Antoni, though Marbury did have that short stint in Boston.
For my part, I'd like to see Melo go out on his own terms and have a proper last run in the NBA. He's been called overrated for most of his career, to the point where I believe he's actually slightly underrated, or if you prefer, underappreciated. In his prime, he was a great scorer who found some success when he had some good players around him, and excelled for the USA in international competition. I don't think he was ever The Guy as he believed himself to be and his teams wanted/need him to be, but he was still a star in his own right. If he is being blackballed throughout the league then that's a bit much, though at the same time, I think he also has to own some of that. There have been other stars who have been able to adjust to supporting roles, and he's been able to do himself with Team USA. It's a bit too undignified for his career to end this way, even if his best days are behind him.