(Edit: Another way to phrase this is that you may be confusing the statements 'I find it exceedingly unlikely that increasing "stigma and fear" will reduce such behavior.' and 'We shouldn't attempt to use "stigma and fear" to reduce such behavior.')

That's a good point.

I'm curious what sort of procedures might use "stigma and fear" to reduce unwed teen pregnancy in poor women. If we take seriously the article CronoDAS posted regarding the rational motivations for young poor women having babies, then presumably addressing those specific motivations might do it.

(Notably, we would not expect preaching traditionalist views via religion, or other means that did not change the material utility landscape, to work. If, as the article holds, young women choose to have babies on the basis of their material expected outcomes, then the procedures would have to alter the young women's material expected outcomes; and — to qualify as relevant here — would have to do so using stigma and fear.)

After thinking about it for a bit and coming up with some possible procedures for doing so, I've decided not to post most of them because they're really quite unpleasant; they're the sort of things that would occur in dystopian fiction. I'll just give one example: changing the landscape for infant mortality by making it illegal for physicians to attend births to unwed mothers.

On second thought, I don't think I am confusing those statements you mention — I think they're both true. First, using stigma and fear to change the motivations for teen mothers would not work, primarily for political reasons (e.g. physicians would not put up with it; people would revolt; etc.) And second, it would be immoral to try; especially given that the same motivations could be addressed in non-dystopian ways.

Try advocating race realism or some other politically incorrect position outside an anonymous internet forum and you'll quickly discover the consequences are much more serious and you're likely to loose your job at the very least.

The same could be said for a lot of other views; that's scarcely unique to one end of a political spectrum. For instance, there is a long history of people losing their jobs for advocating labor unionization, even in the presence of laws forbidding employers from firing workers for doing so.

Outside of explicitly political views: Advocating pederasty would probably not get you a whole heck of a lot of friends or willing coworkers either; nor would advocating for the right of parents to kill disobedient children, as found in various ancient civilizations. In both cases people might reasonably conclude that they (or their children, etc.) were unsafe around a person who held such views. Might that be the case with racialism, too?