Yes they were, but there became a point to where no one would critique them, so it is irrelevant. Jordan would be mad if they won, because his opposite outscored him. This has been mentioned several times. Kobe got the same critiques early on, but people eventually calmed on him. Shaq always got mad if he didn't score 30, no matter what else happens, and often admitted if he didn't touch the ball on damn near every play, he wasn't playing defense or would get team TOs. You can go back and find other instances of other players saying the same thing. There's nothing wrong with wanting to win AND dominate, versus winning and not dominating. And isn't Lebron the same guy that says "check my stats" when they lose and he had a great all around game? There's no way you watched Melo play, and said he doesn't want to win. But once the media paints a narrative of any player, it's impossible for them to shake.
Chauncey, was a career role player who ultimately won a championship on a team with no one wanting to dominate. The only one that could truly do so was Sheed, and he still gets criticized for that...regardless of them winning a 'chip. And Chauncey still had his best season playing along side Melo, and they lost the series because Deron lit him up, not because Melo wasn't playing defense or playing hard.