It's waaaaaaaayyyyy early to blame this on "vape lung". Always be skeptical of people who have an agenda to eliminate something.
Some skeptic’s questions: 1) which people? 2) what agenda?
generally, the US seems to be much more permissive towards citizens making bad health decisions (including much tamer warnings on cigarette packs) so I think it's worth asking why vaping is an exception. it makes me at least a little suspicious, although I'm not sure who to point the finger at now that big tobacco companies are acquiring stakes in vape companies.
as a final aside, consider how absurd it is that vapes are banned in SF but you can still buy actual cigarettes at any convenience store.