I mean that people at times like to think of fiction as either "satire" or some sort of reflection of real-life social realities, including ones that sorta make out how a Free Market will lead to a Megacorp that will destroy said Free Market
So they also take seriously the idea of kids being a YUGE burden to even have, even money aside
Or how "Freedom of Opportunity" is worthless because people are free to be racists and there's a YUGE number of hillbilly neonate's everywhere
Having kids is a horrible societal mysogynistic expectation that chains women to homes and their sexist husbands
Taking fiction as social commentaries and NOT really checking if it's true or not thoroughly can be a problem
I think it's less taking them as reality than taking your cultural cues from what they see people doing on TV. You see this applied to other things, f'rex you'll find that there's no cigarettes on TV presented as anything but vile and nasty aside from a handful of R-rated movies, and cigarettes are socially unacceptable today, whereas when cigarettes were socially accepted, say in the John Wayne era, everybody has one in their mouth in every scene. People take notice and what they watch influences them, if it didn't we wouldn't have ratings.
Back in the day a staple of TV was the DomCom, domestic comedy based on wacky families with kids.
Family Ties was a popular show that gave Michael J. Fox his start, playing the greedy, yuppie child of a pair of hippies (he had a couple sisters too). Take a look at the
top comedies up for release in 2020. All of 1 has kids being raised in it, the rest being either single people or couples without kids (and several that seem to involve sisters with each others husbands which I find off-putting.)
It's not a one-way street. Movies and TV are also influenced by society in a bit of feedback. But I think putting families, showing good times instead of just comedically making babies out to be eldrith abominations, would help influence society back and make families more socially acceptable.
'Course I have no idea how to
do that. Something like a government funded program would go all ham-fisted and look like Captain Planet evangelizing except for families instead of the environment. There's also the issue that Democrats largely don't
want families to exist because immigrants favor their party more so making sure the country needs an influx of people serves their needs. It's not an easy problem to solve without influential people in the right places and there don't seem to be any.