That's not how I read his comment -- I think you're reading accusation into the phrase "why wouldn't you" that isn't really there.
I realise that without context it could be ambiguous, but since even the headline indicates that the guy has already come forward, I doubt jere was unaware of that.
'jere was probably protesting why Salah didn't come out to say it wasn't him /immediately/, 'gee_totes responded by explaining he in fact did go to the police pretty much right away (i.e., yesterday, as soon as he became aware of the NYPost, etc.)