LeChuck is an idiot, but he's an EXTREMELY DANGEROUS idiot. I think that's what makes Ozzie so interesting as an antagonist: he's such a good contrast, since he's slowly forcing the pirate lifestyle to die out.
LeChuck is a knife, hacking and slashing his way through the world to get what he wants. Ozzie is a poison, slowly warping the world to his desires. But they're both effective villains.
"It's, Some Manner Of...!"
I grin a little every time I see this.