Because he attacks the people that MAGA hates. That’s the only metric that they use. If Dictator Trump goes after Democrats/liberals/LGBTQ people/black people/etc then he’ll be “a good dictator” in their eyes. If he starts to go after straight, white, Christian men, then he’ll have become a “bad dictator.” Of course, by that point there will be nobody left to speak out against Dictator Trump since the rest of us would have already been rounded up.