Really? Wishful thinking on your part?
NOW . . . people are deciding that Superman shouldn't be portrayed by a white actor? Now? This strikes me as nothing more than another idea or opinion that has suddenly become the in-thing. It seems to me that deep down, a lot of people are incapable of forming, let alone maintaining their own ideas. They just go with the most popular opinion at the moment.
I don't care whether a white actor, a black actor, or any actor of color portrays Superman, as long as he does a good job. I'm more than satisfied with Henry Cavill in the role right now, just as I was more than satisfied with Dean Cain back in the 1990s, who is Eurasian by the way. Hell, unlike many others, I rather enjoyed Michael B. Jordan's portrayal of Johnny Storm aka the Human Torch. I don't care. Nor do I see any genuine justification that it "makes sense" for Superman to be portrayed only by a non-white actor.