So, if you speak out and people don't like what you're saying and they think you're a bad parent and CPS agrees, your kids could get taken from you and put into child sex slavery.
They don't even need to agree. Maybe you rubbed someone wrong and they just want you hurt, and so they use the media machinery to create a belief that is unshakable despite evidence.
And that's the other side of the pernicious tragedy of the commons that law creates. Pedophiles, rapists, murders, and ongoing abusers, get off the hook on both ends.