What safeguards are there against poverty for teenage dads?

A few years ago on this site, the average NSer's response to a hypothetical about a guy having sex with a girl he met at a party but having to drop out to get a job to pay child support was met with "he should've gotten a vasectomy instead."
That moment gave me the impression that this debate consisted solely of:
Side A: Believes there should be exceptions for guys whose career aspirations would be ruined, and/or who'd be thrown into poverty, by having to pay child support bills, if she said before sex that she wouldn't keep the baby even if she got pregnant...
Side B: Thinks it is reasonable to expect every teenage boy to choose between abstinence that gets them mistaken for having been too undesirable to get laid, a vasectomy that shuts them out from future biological fatherhood, or a risk of live-ruining poverty every time he has sex.
But that sort of "judge each side by who defends it on webforums" line of reasoning has led me wrong before, and recently, this old thread came back to mind. *
So I felt compelled to follow up on it.
1: What safeguards; real safeguards (none of these "she wouldn't want to be a mother unless she had a promise from the father to stay" assumptions, I mean actual safeguards under law, not murky assumptions about human behaviour) are there against the sort of scenario described above happening and ruining the guy's life and career prospects and dragging him into poverty?
2: If these safeguards exist, why was the average NSer's first instinct to say "he should've gotten a vasectomy"? Doesn't that suggest, in their eyes, "he should've gotten a vasectomy" to be a stronger argument than any relating to whatever supposed safeguards exist?
3: As well, why wasn't the rest of side B distancing themselves from the "he should've gotten a vasectomy" talking point? Or for that matter, why weren't they actively calling BS on it? Why were the only people actively calling BS on it those of us from side A?
*(Yes, the reception of my thread about the new Bill Maher season was what got me thinking about previous such threads.)
Apr 21 edit: Poll included. On a technically-distinct topic but one that's closely related enough to belong here. I'm boiling it down to:
Category x: Voters so in denial that "she kept the baby after saying she wouldn't and dragged him into poverty with her" could even happen at all that even the legal system can't be trusted to assess the likelihood of this case by case.
Category y: Voters who grant that it can happen, but believe so strongly that he is obligated to stay even under that circumstance that the legal system should drag him into poverty with her if he tries to leave.
Category z: Other
And breaking it down by the sexes of each, as unless one attributes this to lobbyists, one needs the support of both sexes to maintain the status quo this way.
That moment gave me the impression that this debate consisted solely of:
Side A: Believes there should be exceptions for guys whose career aspirations would be ruined, and/or who'd be thrown into poverty, by having to pay child support bills, if she said before sex that she wouldn't keep the baby even if she got pregnant...
Side B: Thinks it is reasonable to expect every teenage boy to choose between abstinence that gets them mistaken for having been too undesirable to get laid, a vasectomy that shuts them out from future biological fatherhood, or a risk of live-ruining poverty every time he has sex.
But that sort of "judge each side by who defends it on webforums" line of reasoning has led me wrong before, and recently, this old thread came back to mind. *
So I felt compelled to follow up on it.
1: What safeguards; real safeguards (none of these "she wouldn't want to be a mother unless she had a promise from the father to stay" assumptions, I mean actual safeguards under law, not murky assumptions about human behaviour) are there against the sort of scenario described above happening and ruining the guy's life and career prospects and dragging him into poverty?
2: If these safeguards exist, why was the average NSer's first instinct to say "he should've gotten a vasectomy"? Doesn't that suggest, in their eyes, "he should've gotten a vasectomy" to be a stronger argument than any relating to whatever supposed safeguards exist?
3: As well, why wasn't the rest of side B distancing themselves from the "he should've gotten a vasectomy" talking point? Or for that matter, why weren't they actively calling BS on it? Why were the only people actively calling BS on it those of us from side A?
*(Yes, the reception of my thread about the new Bill Maher season was what got me thinking about previous such threads.)
Apr 21 edit: Poll included. On a technically-distinct topic but one that's closely related enough to belong here. I'm boiling it down to:
Category x: Voters so in denial that "she kept the baby after saying she wouldn't and dragged him into poverty with her" could even happen at all that even the legal system can't be trusted to assess the likelihood of this case by case.
Category y: Voters who grant that it can happen, but believe so strongly that he is obligated to stay even under that circumstance that the legal system should drag him into poverty with her if he tries to leave.
Category z: Other
And breaking it down by the sexes of each, as unless one attributes this to lobbyists, one needs the support of both sexes to maintain the status quo this way.