Yes, he was an idiot.
Yes, he should now pay for the child.
Yes, he should be a hell of a lot more cautious about who she has sex with in the future.
Yes I think she baited the trap, and he walked into it, prick first. He's an adult and made his choice.
^^
I got this far and didn't bother reading further because this sums it up. He's responsible for his fertility, her for hers. If you enter a casual sexual relationship, you cannot just assume the woman is 'taking care of it' and obviously doesn't care about getting a disease 
She chose not to discuss her contraception, he accepted this, didn't protect himself and blames her.
Not a lot of sympathy.
Also, he has no right to demand an abortion and if she wants CSA, that's her child's right.
Also going to be up to her to explain where baby's father is when baby is older, but that's to do with contraception.
With no emotion, it just comes back to:
Regardless of gender, you are responsible for your own fertility. If you're angry that a sexual partner didn't use contraception, you have no one to blame but yourself. If a sexual partner misled you or outright lied EG: I'm on the pill and infertile, or he poked holes in a condom? My response would be very different. Lying isn't the same as not offering up information on your sexual status to a FWB. Took the risks, can't be angry that nature happened.
(Though I'd still think he was stupid for not wearing a condom! So many diseases around and the pill isn't 100%)