This and this below
I think all benefits that prevent people from working or earning more need to be looked at.
The false economy approach harms individuals, communities and society as a whole (see the threads about declining towns, cities, and villages).
Having a punitive benefits system and failing health, social care, and other support services, means instead of getting timely, effective, and humane support, people become (more) ill and unable to work due to poverty and stress. Surviving - finding a safe and affordable home and having enough money for food, bills, etc, becomes a full time job.
Many people who only needed short-term help end up needing long-term help instead. Longer period on benefits and in need of more and/or longer term health and social care.
Obviously there's also people who'll never be well enough to work and they deserve to be able to survive with dignity - and anyway punitive benefits system leaves them too in need of more health and social care (bad for them and also expensive for the economy).