For some reasons many westerns believe that Russia will nuke the world before losing Crimea. I disagree but don’t see Musk being unique in believing this. Also and unfortunately, I do not see Ukraine taking back Crimea any time soon.

Except that isn’t what he said.

He said the people in those regions should be able to decide which country they want to be part of and that the result should be enforced/respected by both sides.

It’s a stupid opinion, but he didn’t say what you said he did.

He specifically said Crimea needs to be ceded to Russia.

I'll note that a request for examples was made several posts back and no one seems willing to post them, only describe their interpretation of them.