On the other hand, if they were Wei Dei, they wouldn't exactly say "Ah yes of course, I wrote this paper but don't use that name, use Satoshi" but they would of course say "Oh I didn't know, I'll put a reference to it in my paper".

True, but then Satoshi’s foresight is unmatched.

How would Satoshi know that people would scrutinise their emails 16 years later