I think this undersells the anomaly Trump is. Bush was widely critisised but arguably not to the extend of Trump and I think him at least trying to act like a profesional had a lot to do with that. It should also be noted that mainstream media is more of a meme than an actual thing. To most critics it means leftist, anti Trump, pro Europe and all that stuff but things like Fox News or the British news papers aren't any less mainstream. Most media outlets do lean to one way or the other but this is exactly why its weird to just consider it one big entity. Fox news isn't the same as CNN and the Sun isn't the same as the Volkskrant.