I hear you, and I hear what you are saying.
But I'm not sure he is aware of the blowback in the way we are. We don't like him, so we actively look for things wrong with him.
He doesn't think he's a bad guy, so all the cronies around him who keep cheering for him, aren't transmitting the message WE see, to him.
He lives now - and always has lived - in a little Trumpian bubble. He is surrounded 24x7 by sycophants who think he walks on water, and actively build him (and his ego) up.
I don't know the man personally, of course, but I expect far less of the anger/vitriol/etc actually penetrates his protective bubble. So, yes, if he saw the thrashing he is getting from those of us on the left, then he might feel a bit beaten, and defeated right now. But I honestly think he doesn't sees the vast majority of that stuff, and - even if he did - cognitive dissonance would help him deflect it.
We all live in our own bubble. Those of us who seek to grow, look for perspectives outside our bubble, looking in. Those who are not interested in growth look within the bubble for validation.