Nostrildamus for teh win
!
Don Rosa is awesome.
Seriously, though - no, he's not to be trusted. It's ridiculously easy to shoehorn passages so that they sound like prophecies for actual events (for an example, see how this guy
shoehorns Biblical texts so that it appears like the Bible says Napoleon was the real Messiah).
In short: No. Hoax. Forgettaboutit.
Wiki:
Nostradamus
Nostradamus in popular culture