Id say it goes back further, It was Thatcher that brought in care in the community, people were moaning about what was happening in institutions. Care in the community sounds ok in theory, not being locked in big concrete buildings for years if not the rest of your life.
The trouble is like all services, successive governments cut services and underfund services to save money.
Its then a bomb waiting to explode, people need help, struggle to get help, their mental health then gets worse. Families struggle to cope, get no help, less offices and people to visit for help.
if somebody with mental health issues won't take their medication, the family can't get them to take it, and there's nobody in mental health services that can make them take it they don't take it, they get worse, they have "episodes", which can have dire consequences.
Not saying that's what has happened in this case mind.