One less conspiratorial but more pernicious angle, is that attacking things that are good but complex is a great strategy for troll politicians who don't care about the success of their country but just like the attention.

See Brexit, and free trade in general.

It's a good way to get "the establishment" to gang up on you and defend something complicated while you present simple but wrong alternatives and promise the world.

I also think he's up for sale (as are all the other similar politicians) to a multitude of buyers, foreign and domestic.