I remember talking to someone who asserted that FDR was going to be the end of the world.
It was my grandfather, and I was about 12, and he had gone into a mental time warp. He thought it was 1936.
The more things change, the more they remain the same.
It's difficult enough to project a set of viable future events given what we know now and based on the reality we have. Writing alternative history, based on a reality that we don't have, has another name: Science Fiction.
You assert what would have been. I declare it can't be known.