Except now they have a minimum amount of money and can work on doing better crimes.
It might do more to reduce crime to simply hand out a daily ration of marijuana. Then they may not want to bother with crime thing.
How about a daily ration of heroin or some other hard drug? Government could ensure that the druggies get the full strength, uncut stuff, not adulterated with powdered milk, sugar, or whatever.
Seems this would make the problem go away soon.
And as for the thugs shooting each other . . . we should zone for that. Let's face it, one thug does in another thug, that's a "good riddance" event; it's only a problem if some innocent third party is hurt or killed, and that risk could be greatly mitigated by creating "Thug Free-fire Zones."