But in that situation what evidence is there to believe that Tesco vouchers would be in any way motivating to a very damaged woman who is stuck in an endless loop of pregnancy then loss?
Have some shopping vouchers to fill the deep psychological wounds behind this cycle? That rather presupposes that the woman is carelessly popping them out in a casual and unemotional way, if a baby can be swapped for some tins of beans etc.
And I suspect this stereotype doesn't reflect reality in most cases.
The only way I see this working in reality, is by trading on the addiction that should be being treated, not encouraged: If alcohol, addiction and violent men are the driving forces in someone's life, then it will be these forces that might stand a chance of persuading them to break out of the devastation of their children being taken from them. And that injects an even greater unethical side to this... perhaps enough Tesco vouchers would be enough as they'd fuel the alcohol addiction, which, as its an addiction might well be strong enough to override everything else.
Fundamentally, anything that leads into the practice or beliefs of eugenics is never going to end well.
It's horrifying that the conditions are right in our society for eugenics to be considered an option.
The lines between incentivisation and coercion, informed consent and misinformed enforcement, paternalistic guidance and medical assault become blurred as soon as you start along this road. There's a reason why eugenics is practiced by extreme right wing governments and dictatorships.
And why there's never been a 'good' example of it... Look at the forced sterilizations in Peru which only ended in 2010, which happened under the banner of 'family planning' to raise the poorest in society up out of poverty. But in practice creates a system where indigenous women were conned and forced into unhygiene and unaneathetised butchery of their reproductive organs. They were forced against their will, endured a traumatic physical asssault then were left unable to perform the duty expected of them by their husbands and society. And it didn't even 'cure' the poverty this disgusting policy set out to do.
I've mentioned this as I know people disengage when the most infamous mass sterilization of the disabled, ill, destitute etc, in 1930s Germany (which swiftly moved onto just slaughtering those worthless scum instead).
I know this might seem difficult to relate back to today, but whatever the solution to change those living in deprivation and without seeming able to help themselves... we cannot break the most fundamental rights that have been so hard won. For example, the rights of the individual to control what happens to their own body.
(Sorry slight soap box moment!)