Because he has almost completely faded to obscurity. Most people under 30 probably wouldn’t recognize him at all.
Superman not being one of the characters in this image is also kind of baffling. Unless the artist believes that Superman could bear the cross.
Painless? Even accepting that emotional pain doesn’t count (which I don’t agree with) 50% of every person involved in operating a piece of dangerous machinery just suddenly disappearing absolutely caused widespread injury and death among those left behind.