In case you missed it, George W Bush was pretending to be stupid during his presidency so that average americans would relate with him, the media could mock him, and political opponents would underestimate him.
This is the same tactic they used with Trump's presidency. If the media is spending all of their time talking about all the stupid things the president says, they don't have to talk about corruption or war.
"You fool me once, shame on you, you fool me twice -- well, you can't fool me again!"