Maybe, just maybe it's really the natural hairline. I'm not saying it definitely is but why is it impossible? Where is the proof that everyone must have a NW0 as a kid?You are the only one making up rules as you go along with zeeeeeero explanation such as kids who have receded hairline just naturally have hairlines like that and they are not balding.
Nonetheless Rooney is a brutal case. I have never seen that irl. He really is a abnormality.