Our current approach is telling them "though shit", so at worst we're back where we started. Most proposals protect UBI from wage garnishment so that people don't end up homeless because they are in debt. They also typically assume the existence of universal healthcare, not just treatment but also long-term care of the disabled. So I think the worst thing that can happen is temporary homelessness due to poor money management. Hopefully homeless shelters and social workers will still exist.
