It was assault because at some point she became aware he wasn't using a condom/condom was busted. Now would it still be wrong if she didn't learn about that until much later? I think it would still be. So in the BJ case, what is this man's fault? Not realising at the time that the woman hadn't spit/swallowed, after a sexual act that cannot result in a pregnancy? Should a man warn that they want no kids after finishing on a woman's breasts? In a condom? Place condom in chlorine immediately, or in the microwave?
Sex is nowadays not a procreational activity by default. Nobody needs to declare that they don't plan on making a baby via a blowjob. And in the first case... does a man need to declare that he doesn't want to make babies with a woman that he's just divorced and won't ever have sex again with?
I sympathise with single mothers who didn't plan for a life like that. Whether because they were abandoned by some guy (and even if they receive some money, it's often nowhere near enough), whether the educational system failed again, where there was some slip up.
However, in both those situations, this isn't the case. Whether done also for the purpose of getting money from the start or not, those women got themselves pregnant on purpose without the biological father's knowledge and knowing beyond any doubt that those men didn't intend on making them pregnant, and the measures taken wouldn't lead to an accidental pregnancy.
