The man is a vile idiot. Lots of examples of that.
But more so, they hate what he represents.
Those that hate him, fear self-reliance. In their weakness (or fear of their future weakness) they want someone to look after them. They hide this under the notion of compassion for others.
They also hate someone having more than them and want it. No notion of hard work or ability; those with more were lucky and they were not. They call this fairness (ie The Fountainhead).
Also, they want their use of words (and feelings of pity towards others) to keep them powerful. Political correctness and ideology are their advantage and they want to keep it alive. They call this protection of others less than them who need their help. They worked real hard framing various groups of victims (ie. anyone not white, females, etc).
They want to control words and thus the thoughts of others for personal gain (ie 1984, Animal Farm). They will stop at nothing to frame anyone who uses words of freedom as evil (ie. as racists, monsters, etc.)
Or they have been taught that they are a victim (the world is against them) and thus hate him for not allowing it to be thought as so. They want to be recognized & valued by others for their incredible unique burden as a victim. They hate notions of faith and hope and the power of human will to rise.