He's a bit of a fascist who managed to not carry forward his teacher's most valuable and allegedly highly regarded lesson of knowing the limits to one's own knowledge.
It gets even worse with his student Aristotle, but Plato kind of sucks compared to the more likely original aspects of his teacher.
It's a bit dizzying even, going from Socrates saying something like "all that I know is that I know nothing" or attacking his own assertion immediately after getting the other person to agree with it in some dialogues, to these long winded monologues that go on nearly forever making wildly illogical claims that go unchallenged by the other parties who instead agree wholeheartedly "certainly that must be the case that we should limit what information children can be raised with and get rid of music we don't approve of" or "some people say the universe wasn't intelligently designed but we won't even consider that because it'd be impious" (when the person allegedly saying this was executed for the charge of impiety).