Every time you say LTB for a relationship involving biological children that is not abusive (including obviously to the children), you increase the chance that the poster's children will be abused by a step father. Food for thought?
Or if you are going to say LTB, make it clear that implicit in that is that you should remain single until your children are adults once you've done it.
I think that is conflating a number of issues.
Women need to raise their standards so they don't get involved with awful men in the first place when it's already clear that they are violent, thick or unpleasant, or even just lazy and misogynistic.
Sometimes this is all hidden until you're involved with someone. I was married to ex-H for years before we had children and he behaved like the model gentleman, shared all housework, etc. His true colours only appeared after the children were born.
Women will have crappy lives if they stay with lazy men who expect them to behave like a house servant (even when there's no abuse), so the advice to leave is correct if they've already discussed the issues, demanded change, even had counselling in some cases but the lazy man won't do his share.
However, another crucial plank of women being able to exert those boundaries - that they will not tolerate awful relationships - is them maintaining financial independence and not giving up careers so that they can exert those choices. We need to educate all young girls about this. And as many PPs have said, there also needs to be far more support for single mothers. Surestart reinstated, and also fix the tax system so that they aren't penalised and taxed more on the same household income than a couple meaning that building financial stability as a single mother is twice as hard, even if you do everything right. Of course compounding the inbuilt disadvantage of having only one parent to do all earning and caring in 24 hours per day by taxing them more as well will lead to negative outcomes, and dependency either on welfare or on men. This is obvious which is why other countries don't financially penalise single mothers in this way: it has terrible outcomes and costs everyone more.
I completely agree that it needs to be made far, far clearer in relationships education what a huge risk it is to children to move an unrelated adult into their house, particularly a man. The statistics need to be hammered home throughout secondary school. In many cases people hop between unsuitable relationships for financial reasons hence the need to sort out the tax system per above. But there should also be a huge social stigma about involving new partners with your children, it should not be normalised.
I'm always shocked at posts on here about "you deserve to be happy", "don't let the children dictate your life" 😒😡 etc. Even on this thread people being called "martyrs" for not moving unrelated men into their children's homes!! It is not normal and it's irresponsible and it should be an instant trigger for an SS assessment. If people must date, they can do that without co-habiting. "LTB" does not mean "shack up with other men". Even in cases where by luck it doesn't result in abuse, it is still hugely psychologically damaging to the child(ren) in most cases. We know this. It's not like there's a shortage of data on the topic.
I find the many posts about how people who grow up in abusive households very upsetting to read. I know that data shows this often happens, but there are also many of us who did who as a result of living through such a childhood ourselves actually become the best parents: often we are actually the single mothers who have left the father at the first sign of abusive behaviour and protect our children fiercely and would never, ever involve an unrelated male in their lives at all let alone move one into their home. The very people being called "extreme" and "martyrs". So while their own chaotic and abusive childhoods might be a factor in these women's behaviour, it's certainly not a sufficient condition: other factors must be at play. Perhaps very low IQ, perhaps sociopathy.
Whatever the reason, I hope these people both suffer a very painful and terrifying death like they inflicted on Lola.