[Arainach]

>It’s like studying the social impact of vaping without considering the replacement activity (smoking).

That's not how this works. If you ban vaping, not everyone - and not necessarily most people who vape - would be smoking instead.

"X isn't as bad as Y" is not a good argument in favor of X. They can both be bad.

[AllegedAlec]

It's the same kind of bad line of argumentation we disputed for decades with banning piracy (implicit assumption that every pirated copy was a sale lost).

[teekert]

Aaaacckkkktuuaally, at my kids school vaping is now an epidemic of sorts. It's much cheaper, it's cool, you get it easily via Snapchat. Many kids later pick up smoking (anecdotally).

[n4r9]

I don't think this detracts from OP's point.