She had sex, that is biologically designed to produce children. And If there’s an unwanted child, it’s statistically near certain it was unprotected sex, so they weren’t responsible about preventing it. Admittedly-inconveniently and possibly seen as “unfair”, biology dictates that’s mostly on her, as Women are the gate keepers to sex (unless the unlikely exception that she was raped).
Before birth control women had to be entirely more careful about who they had sex with because it was likely they would get pregnant, and thus have to deal with the man and ensure he was honorable and not a douche. Birth control and the masculine sexual revolution made women far less selective, thus more likely to bare children with dishonorable, flakey men.
All of this is pretty established behavioral psychology. Radical feminism is angry at biology, and wants to try to socially engineer established gender specific behaviors out of people.. and it largely doesn’t work.
Women have a blast when they have their youth and use it to be run through by high value men (but not given a ring, which men are the gate keepers to).. but when they hit the wall many regret their choices because now they are less attractive, run-through women who can’t get a man to commit to them. Women generally lose their value in the dating marketplace over time while men gain value because they make more money and status once they reach their 30’s.
Man you sure don’t believe in protecting the vulnerable and innocent. You’re being the stereotypical “soy boy” here, afraid to challenge women even if lives are at stake.