They are allowed to openly hate him; and so they do. Leftist hatred and bigotry and racism is always limited and tightly focused according to skin tone and political affiliation -- and sometimes gender -- but it very definitely exists.
ELON MUSK SHOWED UP FOR TRUMP'S TRIUMPHANT RETURN TO THE SECOND BUTLER, PENNSYLVANIA RALLY, WEARING A PERSONALIZED BLACK MAGA HAT, TO ENDORSE TRUMP. SO THEN THIS LEFTIST PISSANT WITH A NEWSLETTER -- LOCALLY INFAMOUS FOR SAYING THAT REAL COMMUNISM HASN'T BEEN TRIED YET -- WAS FURIOUS AND ASSERTED THAT ELON LOOKED LIKE A DORK. HERE'S THAT GUY COMPLETE WITH A FACE MASK, AND PRONOUNS IN HIS PROFILE. LEFTIST GLASS HOUSES, AND THE TOSSING OF ROCKS, DUDE.