I don't mind Neelix at all as a character, which may be controversial. He's a magnificently flawed character - petty, thin-skinned, insecure as all hell, papering over a lifetime worth of trauma and existential dread. He has the sort of complexity that other Trek characters dream of.
Yes. And the couple of times Voyager focused on this, MAN, those were powerful episodes.
But alas, they just wanted to make the guy with the silly costume and nasally voice be funny all the time.
What a waste.