While I think his religion is odd, to call him a weirdo and all of this other stuff seems very harsh. How can you really know if he's a nice guy or not if you haven't met him? Seems very unfair to me...
To be honest, I was really disappointed when I saw the first Men In Black/MIB II. It seemed such a step down from Independence Day. I'm not really interested in seeing this in theatres, but I might give it a chance on DVD