drug-dealing, criminal activity
Well that (crimes) will increase if benefits are cut even more than they already have been.
Also many people with substance issues genuinely aren't 'fit for work', and how many employers would hire them?
Often (not always) their substance issues stem from self medication after experiencing traumatic events.
If you want people in that situation to be well enough to work, they need access to effective support and help.
You say they refuse to engage with MH support services. Funding cuts mean those services are often pretty useless or almost non existent, and not in any way effective. Provision and quality of services also varies a lot depending where in the UK someone is.
So there's a need for better addiction, mental health, and social care services. In every area of the country. Which will cost money. Perhaps more than paying benefits, although morally it's the right thing to do.
Or the extremely abusive sex offender who has been housed, not expected to get a job
Would you want to employ that person or have them as your colleague?
I agree currently it seems like an unfair system. That sees paedophiles and other violent abusers often prioritised for social housing above many victims. Victims who are also suffering from PTSD (due to the crime they were victims of) and are unable to work and stuck in substandard housing including temporary accommodation (which makes them more unwell and impedes their ability to recover).
The problem is, when the crime is that serious there's a need to know where the offender is living. I guess some people could argue they should remain in prison. It's a difficult debate and not one I know the answer to. However, definitely there should be more social housing, so other people including but not only victims of crime, have decent housing.