O'Douls most certainly is beer, it just has very little alcohol content.
Ok, then substitute "Nada-Daquiries" or "Nada-Ritas." Any non-alcoholic beverage that is intended to look and taste like its alcohol-based equivalent.
We're talking about "Carcinogen Replacement Therapy" here. That is after all why the non-smoking laws exist. There is no law against nicotine as I'm sure you are aware. It's sold over the counter in every corner drugstore in the form of cigarettes, cigars, snuff, nicotine patches and gum.
I'm not sure I get your point. You're saying that because it looks like someone is drinking alcohol, then s/he must be doing so? Following that line of reasoning, a former smoker who picks up a pv and vapes... is smoking?
Once again, there is no smoke without fire. That's a fact. Appearances and supposition are no substitute for facts.