The way he viewed the "TNG verse" was bad for TV Drama. I think that is where a lot of their criticism comes from. I think it is deserved. People will have conflicts it is in our nature. People are not always going to agree, we aren't a bunch of drones.
I don't know. While I understand the frustration of the writers, I've personally always loved the respectful, mature, and professional way the TNG characters acted around each other-- and how there weren't the kind of petty disagreements and soap opera nonsense like we see on every other show.
They could certainly argue and disagree about the moral quandary of the week (which they did quite a LOT on TNG), but that's about as far as I would have wanted them to take it.