Yes, absolutely.
It is a complex problem and that approach will not necessarily work for everyone. That said, there are some great success stories. I asked one person what access to a safe supply had changed for her, and she said jokingly that she's much fatter now. Since that person was constantly searching for drugs, she was not eating well. So her health has improved and she has started working again. She even said she can afford to go to the movies now. So this approach has made a huge difference in her life.