Idk, I kinda liked the scene with his speech. Made him a little more frightening to me, more manic and unstable.
I suppose I am content with the Luthor portrayal, meaning that I can accept it and move on. I didn't think it was bad, exactly, or it ruined the movie. Saying that, I didn't think it lived up to the potential of Lex Luthor in this Universe. His character could have and should have been much better, I think. I agree with those who say that the entire character, Eisenberg, the portrayal and the mannerisms, would have been better suited for The Riddler