I suspect it's what you are characterizing as "counter-trolling*, but with intent to make a point: Pregnancy isn't something women do by themselves. There's going to be a man involved.

Historically, we have generally tried to hold both parties responsible. Women were expected to refuse to put out until marriage. If you got a girl "in trouble," shot gun weddings were a thing.

But men were generally expect to earn the primary income and women were expected to primarily care for the family and maybe supplement the income. With people generally having fewer kids on average and women more often expecting real careers with status, income and job satisfaction, things have gotten vastly more complicated and "you two need to just get hitched" is not sitting well with most folks.

(There's a lot I'm leaving out. This isn't intended to be comprehensive, just a thumbnail sketch.)