Pre the 1990's, SS couldn't 'overcome the effects of poverty", the legislation/funding and will, wasn't there to do so.
Coupled with a lack of Contraception/Women's rights/'Duty of Care' etc, that we have today, there was no other solution, than to remove the children, unfortunately.
The issue, is, that often, what the Media can report doesn't look enough evidence to have a child adopted, but it's the everyday impact of living with that.
People assume that the level of attachment and caring is there and the rest can be fixed.
That was shown in the comments on the recent case of the two Parents with LDs. Everyone said "bring in Carers" etc. But if that level of attachment isn't coming from a Primary Carer, you end up with MH issues.
If you attach (and all the other bits), most people, who work outside of SS, or haven't had personal experience, don't realise the damage that is done and the danger that children are in, when their Parents, don't.
Likewise, when I've worked with people with attachment issues, they can't see what they are doing 'wrong/differently', just like someone with other conditions, ASD etc.
I personally after being a CP SW think that a lot of removals could be prevented if Adult MH services were better funded and more available.
The majority of the Parents, that I dealt with, whose children went on to be long term placed elsewhere, had undiagnosed PDs (until we got involved) and they ran out of time to overcome these.