I agree up to that point, it's not all Trump for sure.
But who is to blame? It's the public that's to blame IMO. Not Bush, not Clinton, etc. The public that is seemingly OK with the 1001 lies that Trump tells, and the incredible political partisanship of Fox news, etc.
Nearly all power flows from the public to government, and to corporations (viewers in Fox case). Most of the public simply doesn't care, have time, or in general want to deal with the nuance, tedium, and complexity, of sensible governance. They like the spectacle and emotion...doomed to fail if that's the case. They can be lead by the nose with ease by anyone willing to abuse them.
What massive betrayals and calamity befell us during Bush Senior, and Clinton, or Obama? GWB is an outlier, 9/11 and GWB's indifference towards governance opened the door to the neocons/Cheney/Wolfowitz pursuing global wars, so it's not forgive, it's just at least understood as a reaction..
Remember, it's in the best interest of any newcomer to demonize the "Status quo". It's how they create an opening. Look how terrible government is today, that's why you need ME! Don't believe the "all politicians are bad" routine. Politicians are a product of our system/population. Put anyone in that role, and if they aren't already, they will quickly become the same.