i think what is being missed is that there was such an utter lack of willingness to try and make even the most basic changes.
even with ss making spot checks and the child being on the protection list there was no motivation to clean up the house and improve even the appearance of their parenting. if even when bought a bed and having had it delivered and KNOWING you are being investigated and whether you can keep your child is being considered you still cannot be bothered to put the bed up then there is zero evidence of even wanting to do better.
the father putting the gate up with shit and mud all over his shoes being trampled into the boys bedroom carpet for example. not even the sense to take his shoes off or wipe them at least.
they knew they were being watched yet went out and got a dog and let it shit and piss in their home. there was zero effort and in fact things were getting worse.
if they had just tidied up, put that bed up, started taking care of the home the outcome would likely have been very different.
if parents can't even, when at risk of losing the child, make the effort to do these very basic things how can you trust them to be competent to make the massive changes to their parenting and behaviour required to prevent a child from totally missing his development window?
one thing i would say is that the ss were too softly, softly in a way and that it would have been better to make very clear to the parents what way things were headed - re: you are at risk of losing your child, you need to be showing that you are making changes and willing to improve things or you WILL end up losing your child. if i don't see that the carpet is clean, the bed up, food in the fridge etc etc by the time i come next week i will have to recommend x. i don't think the parents actually got the magnitude of things and whilst they were holding onto the idea of keeping the family together they should have still been making very clear what they would need to see to be able to do that and what would happen if they didn't.
very sad.