I don’t think that, given the current evidence we have, that we can reasonably put them even close to cigarettes in terms of long-term health consequences. “Addictive”, by itself, doesn’t seem like a strong reason to ban or even put particularly significant regulations in place.

Given the scope and scale of opiate deaths in the US, I don’t think that it’s even realistic to say that it’s even close to as bad as any opiate or opioid. Overall, I’d say that we’re wasting valuable resources in any attempts to regulate it, things that could be better spent one opiate/opioid addiction mitigation. It would be nice if we didn’t have limited resources, but we do, and we shouldn’t be putting attention on minor-league stuff when we have much, much bigger problems.