Not everyone has the luxury of being able to wait. Do we punish those who can't for their biology?
My great grandmother went through menopause at 25 and is said to have had what we now call POI, my grandmother had major fertility problems at the same age, it's really rare in my family for women to have biological children after 30. I was diagnosed with it at 28 (though 5 years later, it turned out to be a misdiagnosis which makes me curious about the rest of my family). There are a lot of adopted children among my aunt and female cousins.
Yes, it can add pressure to think of these things younger, especially if that's held up as the best you can do, but absolutely none of that, biologically or socially, makes it less risky for someone to go through pregnancy and parent as a teenager. There is no evidence that POI or any other reproductive disorder makes it safer to have a child as a teenager compared to the general population or that their biological development is going faster to compensate for the top of the fertility window being earlier than others. The body is still in development and pregnancy is a huge tax on it. Some get through great, but the higher risks - and those who get hurt by them - shouldn't be ignored whether or not a medical condition was involved just because the risks don't hurt everyone.
It's not punishment to recognize that it's much riskier even with atypical medical situations involved - biology isn't trying to punish us even if it feels that way and the pressure can have major consequences. I had a friend who had a similar medical and social to me and she died from pregnancy-related complications at barely 16. Her biology didn't punish her, her biology did all it could with a partially developed reproductive system and an overtaxed body. The only punishment I can see is from those who made it seem like a great and the only acceptable option.
I agree that abortion is a personal choice and should always be; however, all the evidence - physically and mentally - is that the costs are far far less for the vast majority compared to a pregnancy going to term, whatever the result of a pregnancy going to term is. While we cannot predict all outcomes, the two cannot really be compared when it comes to the risks involved and saying there are costs of both is disingenuous to the likely costs involved.
Look it's not ideal to have a baby as a teen. It's not ideal either in your 40s. But would you say it is not OK to have a baby in your 40s? No, because saying so is unhelpful judgement and prejudice. Well, same goes for teen mums.
I'd say having a child a in your 40s is riskier than in the late twenties, early thirties though it's not until the very late 40s that the risks become even close to being comparable to the teen years (over 45 is still less risky than under 20). People choose to take risks, the benefits may play our in their favour, recognizing there is a need to balance that isn't the same kind of value judgement as calling someone names or violence (I had both as a teen mother).
Risks aren't bad, some of the best things in life involve risk, but the research around the social circumstances that make teen pregnancy desirable to some shows more a society failing teenage girls in so many ways. All of us with great stories of it doesn't change that the most common contributing factors involve lack of resources, poor self image, and social pressure to either keep a pregnancy and/or for an idealized version of love that even when our relationships work, doesn't play out that way. We can't really compare that to 40somethings which generally involve life circumstances with no suitable relationship and/or career choices delaying the option.