The unfortunate reality is that if you have shitty parents (and close relatives), you will probably be fucked regardless. Instances of child abuse and predation in the foster system are high. It's unfortunate, but I'm not sure there is a reliable way to save kids from their shitty family. State intervention or not, it's just a really hard problem to solve unfortunately. If they exist, I could probably think of some solutions if I thought hard about it and looked into it, but I haven't done so.
The unfortunate reality is that if you have shitty parents (and close relatives), you will probably be fucked regardless. Instances of child abuse and predation in the foster system are high. It's unfortunate, but I'm not sure there is a reliable way to save kids from their shitty family. State intervention or not, it's just a really hard problem to solve unfortunately. If they exist, I could probably think of some solutions if I thought hard about it and looked into it, but I haven't done so.