How would anyone know that a nebula 7,000 light years away was destroyed 6,000 years ago? As you say, the light from such an event wouldn't reach us for another 1,000 years. As nothing can travel faster than light, no possible signal or information from such an event could have reached the Earth yet. So how do you know?

If Andre the Giant wanted to attend a Broadway show without blocking the view of others, why didn't he just sit in the back row?

I don't know if Muhammed really wrote such a letter, but if he did, he didn't follow it himself, and his followers today certainly are not following it.

Mohammed was illiterate. He did not write that letter and it clearly is not followed today.