Nope, and Neymar does his talking on the pitch, by consistently being great scoring and assisting and beating players infront of him. Thats all that matters, not that he isnt some choir boy with bowtie off it
People should judge a player on how he performs and acts on the pitch now, not on some preconceived notions of a stereotype he fits into (which he doesnt, he isnt a bad boy, was a more bratty teen starting out, but far from a bad boy). He is pure and simply an extremely effective player now who has matured alot. He has a "flashy" style in dribbling and technique displays, but its not for show, its fun for him, but defenitely does it to beat his marker and produce a play. To put it into simple terms, he is far from a Quaresma

But more like a Ronaldinho (at his better days), who is more of a scoring threat and a quicker player.
If there is ONE main thing thats an issue with him attitude wise on the pitch, that is his diving, dont like it, but I'm a fan of an italian club and italian football, so a player diving is hardly some revelation to me (I watch Giorgio dive almost weekly, in some sneaky ass ways hehe).