When working with children what’s not to like about attachment theory if you have a statutory responsibility to provide expensive support to children in need or looked after children?
There is not nearly enough of the expensive personalised support that neurodisabled or neglected children may need and what there is requires superhuman persistence to access.

Attachment theory instead turns the focus away from poor provision to poor quality of caregiving.

Parenting classes based around ‘increasing parental sensitivity’ can be rolled out relatively cheaply

All the better if an army of ‘ trained key workers, social care workers, personal advisers and post-adoption support social workers in the care system, as well as workers involved with children and young people on the edge of care’ can recognise and assess attachment difficulties and parenting quality, including sensitivity”

NICE guidance
https://www.nice.org.uk/guidance/ng26/resources/childrens-attachment-attachment-in-children-and-young-people-who-are-adopted-from-care-in-care-or-at-high-risk-of-going-into-care-1837335256261

So what’s not to like –unless of course like me, your autistic child must enter care because there are no appropriate services for him or for us in the community.

Similarly past abuse should never be an excuse for the unacceptable behaviour exhibited by some people with Personality Disorders. We should seek out and vigorously prosecute the abusers but the victim have no right to hold the rest of society responsible. They can blame the rules and the system in society that creates an atmosphere for abuse to go unpunished but the way to respond to this is to work to change the rules and the system not exhibit behaviour that wastes scarce resources and puts others, including health and social care staff at risk.

One perspective (ours) is not necessarily more valid than another (the person we see as having problems).

There are limits to our own knowledge and capacity.

Mal-adapted coping behaviours meet needs.

Recognising the ‘why of things’ and what these needs are is key to changing problem behaviours but blaming parenting sensitivity (usually by mothers) for an adult’s difficulties is unfair and misguided. It risks playing into a narrative of ‘blame’ and ‘rescue’ that meets the needs of the person doing the ‘rescuing’ rather than the needs of the person being ‘rescued’.

That is my perspective and arrived at as a result of my own life experience!