We can't read his mind but we can generate a fairly accurate model based on what he says. He has openly admired the powers of tyrants in multiple countries, and hinted that he would like to continue to be president after his term completes. Based on my read of his text, it seems like he sincerely believes things like "Kim Jong Un is a good guy and he deserves to continue running North Korea".

Of course no social media company will be shut down over this- Trump has absolutely zero power in this regard (I think half of Trump's frustration is in realizing how little power a president truly has).

Anyway, he doesn't think he is a king. He thinks he is an emperor.