Crime would reduce dramatically if everyone was above the poverty line. The majority of crime is from lack of money and desperation. There has been a lot of support for a Universal Basic Income recently so that may help to solve this problem.
But if someone was elevated by UBI above the poverty line and spend all their monty on drugs, they would be right back in poverty.
Depending on how the UBI injected cash into various parts of the population, drug street prices would adjust to that extra cash.
I agree that poverty is the root of evil, but the poverty and crime problem might not be solved by government assistance/support to the poor people.
If you want to know what I mean, check out the failure of government-sponsored housing in the documentary that was an eye-opener to me, "The Pruitt-Igoe Myth." If you have watched it, then you know it.