It's pretty bad one of the reasons he hated Rondo is because Rondo was correcting him on his mess ups.
Or another part being not getting the ball every time he should. Doc used to say that the hardest part of Rondo's job was running the offense with three players telling him to give them the ball all the time, this is just a by-product of that.
Yeah the article definitely makes it sound like both Ray and Rondo were a bit at fault for this. It's not all that surprising. I remember back when Ray played here in Seattle he'd have games where he'd match Kobe Bryant blow-for-blow... partially, because he truly believed he was better than Kobe Bryant. That kind of confidence and ego is part of what makes a guy like him so amazing. It's part of the reason he is in a class with Jordan and BIrd when it comes to "clutch". Unfortunately it's probably a hard thing to maintain when a young smug role player on your own team suddenly surpasses you, reaches stardom, and starts barking orders. I honestly think Pierce has had the same type of issues with Rondo... and for many of the same reasons. Pierce wouldn't be Pierce if he didn't convince himself he was the best player in the world. When asked in 2008, he confirmed that he believed he was the best player in the world. It has to be hard for a guy like that to watch a young player go from role player to star of the team. With Pierce, I think he's still in denial. Unless I'm wrong, Pierce has never acknowledged that Rondo is the "man" in Boston... And arguably he's still a better player than Rondo anyways. With Ray it's different. Ray unquestionable went from franchise player, to part of the "Big 3"... to role playing shooter... to bench player. Maybe he hasn't handled it as well as you'd hope... but I really can't blame him for not being wired that way. He'll continue to believe he's a god out there... and because of that, he'll probably continue to knock down ridiculously cold blooded clutch shots for the Heat.
FYI: I don't think it was ever much of a problem for Kevin Garnett. He's a different breed of player. From the moment he arrived he was all about the "team" and "sacrifice". He came here and immediately took a back seat... claimed it was Paul's team... refused to get his number called last, etc. But what KG does on the court isn't always dependent on believing he's the best player alive. He impacts the game in different ways. Pierce and Ray need that confidence to play the way they do. Anyone who has played basketball would understand. Simply put... if you believe you're going to miss a shot... you'll miss the shot. That's why Ray convinces himself he's on Kobe's level... why Pierce convinces himself he's on LeBron's level... and why Rondo convinces himself he's on Rose's level. Even if it isn't true, they need to believe it.
They said it couldn't work. They said you could have three alpha dogs suddenly sacrifice personal glory for "team". We won a title that first year so it's hard to say they were right... but none of them anticipated the rise of Rondo. If Rondo had a different personality, maybe this wouldn't have been an issue. But at this point... watching Ray flee for Miami to intentionally stick it to Boston... you could almost make a claim that they were right. Too many egos doesn't work.