But there's definitely still a hangover social idea that having kids is good and not having kids is bad.
I'm not sure there is. You're probably right that parents of current teenagers are expecting their daughters to have children, because they did, and they probably still see it as the "normal" way, but I don't think those teenagers feel under any pressure to have children - so it's going to be on those parents to temper their expectations and manage their disappointment, when the time comes. I'm not sure that's hugely different to the last few generations - anecdotally, I married DH when I was 30 and he was 33, and his parents went MAD for children after that. He held a baby at the wedding, it's ALL they talked to us about for the rest of the day, and breakfast together a few days later. They used to call and text and write him letters about how they were in their 60s, and he was running out of time, and they felt let down and worried that they wouldn't have grandchildren. Ironically we had one a few years later and they've had little to do with him.
There are whole communities and very mainstream elements of platforms like TikTok where young people discuss children, and lots of them are making the choice that it's not for them, either because they don't want them, or for financial or environmental reasons. They feel well supported and empowered to make those decisions, and "knowing" other people making the same ones will help them to resist pressure from parents or anyone else...
I think this is the best generation in terms of getting to make a choice.
I do think that article is quite sensationalist; those stats are a bit odd. I'd feel stressed as a US mother because of the shootings and the political landscape my children were growing up with. We have no support with our toddler DS, so it can often be overwhelming trying to get everything done, and we're definitely unsupported, but of the 8 toddler mums that I'm very close to, I'm the only one in that situation. One has her parents or her in-laws move in from Wed - Fri each week, on alternating weeks, to help her with her toddler - and she's still on mat leave from her second. She's rarely by herself. She wouldn't say she's unsupported. The rest all get a day or two's childcare each week. Most have chosen to have second kids.
A lot of the stuff listed is expected. There was always going to be worries about the future. You know your time won't be your own. I haven't argued with DH more, we rarely argued before kids and haven't started since. Sleep has been rubbish but you learn to cope and it's not forever. And there's the lovely moments and the overall love which means people do it again - not many stop at one for reasons other than financial.
I think the current youth, and the next generations, are in the best position possible to consider being childfree as a decent, normal alternative to having kids.