I'm guessing he probably never read either one.
"The guardians, Plato’s philosopher-kings, can utterly control the lives of those in his charge, even to the point of censoring music and poetry, regulating pregnancy and childbirth, eliminating private property, and annulling the individual family. Aristotle departed from this conception of the good society and took as his point of departure the aspiration and freedom of the individual."
Aristotle, Politics, 1.1253a:
"The city-state is prior in nature to the household and to each of us individually...the state is prior by nature to the individual...a man incapable of entering into partnership...must be either a lower animal or a god."
Critics of Plato on this subject routinely omit that the idealistic elements of his utopian state apply only to the few, the guardian class, not to the general population, and that the guardians will be comprised only of the best sort. One may criticize Plato for making naive assumptions about human nature, but he does not deserve to be read any less carefully than does Aristotle, who is anything but a libertarian individualist.