There are some cultural notes that might be handy. In the UK vaping is overwhelmingly something done by people who used to smoke. This means we're not so worri

There are some cultural notes that might be handy. In the UK vaping is overwhelmingly something done by people who used to smoke. This means we're not so worried about the potential harms of vaping, because they only apply to people who've never smoked. Vaping is unambiguously very much less harmful (like, by a metric fuckton) than smoking tobacco. Despite this, we still have plenty of cardiologists who are hesitant to recommend vaping. They do tell people to stop smoking. Those people do not stop smoking, but they probably would if they vaped. Medicalising the vapes is one way to persuade these fucking cardiologists that vaping is safer than smoking, because nothing else seems to be getting through to them. It's also a way to get effective smoking cessation into the hands of very poor people.