The thing people don’t seem to get about the ugly fat bastard ghost is he isn’t just one guy, but a representative for all men who died unloved. It makes Stocking more appealing because she falls into an innocent girly love with everyone who never got it, she laid him to rest. It’s supposed to be silly on the face if it seeing a mindblowingly attractive girl fall for a gross fuckhead to the point where she was willing to throw away her angelhood and go off to an unknown future, but the point of the episode is underneath all that shit personality he just wanted to be loved too, he passes on in earnest because Stocking gave him (and by extension all of the unloved) a moment they never got.