Oh when I say destroy him I don't mean that they'll cease publication of him. I just mean that incarnations like the Injustice Superman are going to be seen as a defacto truth of what Superman is because a bad movie shows it that way. And perceptions can take a long time to change. Snyder looks like he's going to be taking an idea from the imaginary story concept, which on its face is based on the idea of making familiar characters unfamiliar, and turn it into genuine canon. In other words the purposely unfamiliar will turn into the familiar. Superman will become that mentally unhinged individual who cannot function in daily life without his girlfriend and if he loses her, loses his mind.