I mean if he’s a cheat, then there are hundreds of cheats playing in the league
Was he disruptive on the Nets? He was like the least problematic player there. He asked out when he realised he had a completely unserious co-star and that project was going nowhere. And yeah it wasn’t an entirely amicable divorce with the Rockets but he spent 8 years in Houston with very little issues. Sometimes players have to force the issue to get the move they want. Not many Rockets fans hold that against him and he's still a beloved player in Houston. I don't think there was any problems to speak of back in his OKC days.
The most disruptive he’s been was in Philly and even there I think he was more right than wrong. If a player you liked had a dispute of that nature with the GM you would almost certainly side with the player, so ....
Harden's biggest problem has been he hasn't really invested in his own PR, so when negative stories about him have been put out there, they just fester and fester and it ultimately shapes the narrative around him. If he had Curry or Giannis' PR machines, I'm sure he'd be a more well liked player.