IMO if a dog is assessed by a rescue as not suitable in a home with children then it should be euthanised.
If a dog isn’t suitable to be rehomed with children then presumably that is because the dog has some nervous/aggressive streak which means it is a risk to those wishing to rehome it. In that instance the dog isn’t IMO suitable for rehoming in any circumstance, and as it’s unfair to keep a dog in kennels for the rest of its life then euthanasia is IMO the best course of action.
Obviously that doesn’t go for all adult dogs, but let’s face it, plenty are advertised through rescues as “not suitable for homes with children.”
As for the parents, sorry but “they’ve lost their baby and that is enough punishment” isn’t good enough. Children die in all manner of circumstances which are as result of the parents. If you fail to strap your child in a car seat and then crash the car is the loss of the child punishment enough? No of course it isn’t.
questions need to be asked and the parents need to question what in God’s name made them go out and buy a dog which is renouned for being aggressive and capable of inflicting serious injury or death on a child.
And while of course there are other aggressive breeds, staffies are built in such a way that the damage they can inflict is far worse than say a Labrador.
And selling a dog over the age of 6 months should be illegal, with any sites, gumtree, pets for homes and the like being prosecuted along with the seller.