No, it has not been debunked or discredited.
Quite the opposite.
Stephen Paddock and the Pink Pussyhat NASA shirt anti-Trump dissident appear to be identical twins.
Exactly the same shaped head, ears, bone structure, lips, eyes, and facial hair.
“Exactly the same shaped head, ears, bone structure, lips, eyes, and facial hair.”
Agreed. Lack of visible eyebrows, too.