Why did God forbid knowledge of good and evil?

Could it be he didn’t want us to know what an evil messed up sonuvabitch he was?

(Given that he proceeded to order mass murders left, right, and center – the Hittites, the Girgashites, the Amorites, the Canaanites, the Perizzites, the Hivites, the Jebusites, and the entire cities of Makkadah, Libnah, Lachish, Gezer, Eglon, and Hebron – and we still think he’s overflowing with love and kindness, he obviously didn’t have anything to worry about.)