"Beck's sudden pronouncements are a head-scratcher because he's never made any public statements (that I know of) about liking theatre"
So what? If this was his very first theater experience ever, he can't talk about it? He can't make parallels between what he saw and his world view? He can't talk about what it meant to him?
What's the purpose of any art form if people can't talk about what it made them think or feel?
If anyone ever tells you that you put too much Parmesan cheese on your pasta, stop talking to them. You don't need that kind of negativity in your life.