Even if the male Santa DID have reindeer, he'd still have transportation problems because he would inevitably get lost up there in the snow and clouds and then refuse to stop and ask for directions. Men don't answer their mail. Men aren't interested in stockings unless somebody's wearing them. Finally, being responsible for Christmas would require a commitment. Definitely a guy.
Cupid flies around carrying weapons.
Uncle Sam is a politician who likes to point fingers. Any one of these individuals could pass the testosterone screening test. But not St. Nick.