This is the only quatrain the Prophet wrote in Latin showing his great disdain for those mentioned and the soleminity of his curse. He was serious.

Q6.100

LEGIS CAUTIO CONTRA INEPTOS CRITICOS

Qui legent hos versus, mature censunto;
Prophanum vulgus & inscium ne attrectato.
Omnesque Astrologi, Blenni, Barbari procul
sunto,
Qui aliter faxit, is rite sacer esto.

INCANTATION OF THE LAW AGAINST INEPT CRITICS

Those who read these verses, consider them with maturity
Let not the profane, vulgar, and ignorant attracted
All astrologers, fools, and barbarians stay afar
He who does otherwise, subjected to the sacred rite.
 
 

Prophet Nostradamus had no liking or respect to astrologers or astrology, for fools or ignorant, for vulgar or uneducated and uncivilized, and for Muslims. Astrology or the knowledges thereof is not needed to understand his prophecy. As the matter of fact, the astrological knowledges can be very harmful if one studies his works. If they study his prophecies out of curiosity or sensationalism only,  the readers shall be cursed with the ancient curse (set by the prophet) in which the ignorant will remain foolish and ignorant.