Well setting up this conception through craigslist was pretty fucking stupid. But no he shouldn't have any involvement nor have to pay a cent. He is a surrogate parent.
Sadly he wasn't 'legally so'.
So now this claim has gotten shit screwed up and the wrong people are being penalized for it.
And yeah he's probably right, someone somewhere looked at this case and jumped on it to further a political point. It's obvious. Hell my own family has gone through bullshit before with legal systems arbitrarily pulling claims on us because a nameless face saw an opportunity to prove something. It's pathetic.
Stupid case is stupid, and the poor people involved made a silly mistake and had to go through the worst of the consequences for it. I know that feel and if there's any justice in the world this case will be thrown at the door and laughed at for it's bullshit.