The deepest hatred of Trump is based on fear of the changes he makes, and threatens to make. Not just in America, but geopolitically across the industrialized world. To them, he's an existential threat of the first order.
That half of American's voters who supported Trump in 2016 hear the harsh voices of critics, watch and read the diatribes of the Trump-despising media, and witness the semi-hysterical rants of the Democratic Party. As the decibel level of rage from the Left increases.