Hm. Having almost no personal experience with social services, and no professional experience, I'd probably have happily accepted that the professionals know what they're doing, and that things have to go a long way, through a lot of layers, to get to that point. That there are so many checks and balances, and different people involved, and so much evidence required, that errors must be very rare and require extraordinary circumstances.
But having read my psychiatric notes, I can't feel that easy acceptance about it. I've seen, over hundreds of pages of notes covering decades of treatment, written by various doctors, nurses, and others, the many misunderstandings, errors, incorrect extrapolations, assumptions, "facts" based on prejudice or bigotry, cover-ups to avoid admitting serious error, exaggerations, false accusations, and outright lies that those notes contain. I've seen how things transmute over many repetitions, from conjecture or suggestion into solid fact-based professional opinion into truth written in stone, how they layer on top of one another, and how early errors can skew later perceptions.
Having lived with the consequences of these notes in the way I was treated for many years by mental health services, I am unable to blithely assume that public services will get things right purely because there are lots of professionals involved over a long period of time.
And maybe this personal experience doesn't, in reality, carry over to how social services works. But there are a LOT of people like me who have had a similarly disillusioning experience with some service or another — like healthcare, education, some part of social services — where they've felt prejudged or misunderstood or where mistakes have mushroomed, perhaps without them even knowing that's what's happened. These experiences will foster a sense among large numbers of the public that these services can't really be trusted, even while we acknowledge that the services are necessary and that people who talk about bad experiences with them may be unreliable.
Services, including social services, need much better funding, and higher standards of training, oversight and documentation, and they need it for many years to come, because that's how long it'll take to regain the trust of people who've either had bad experiences with them personally, or heard credible bad experiences from others.