repairing harm through dialogue between victims, offenders, and community members

What if the person who committed the crime doesn't want to engage in this process? What if the victim of the crime doesn't want to? What if a person accused of a crime maintains their innocence? There are plenty of cases where restorative justice can work, but many others where it won't.

addressing root causes like poverty, mental health issues, and substance abuse

the goal is to create a society where crime is less likely to occur

I think this is a much better framework to work with than prison abolition. Picking up the pieces after a crime has been committed is expensive and usually leaves you choosing from a range of bad options.