I don't use drugs. But my understanding is that plastic bottles aren't exactly uncommon even for spirits. And then with wines you get the boxed stuff. A carboard box, with plastic/foil bag inside.
I do use drugs. I have never seen spirits in a plastic bottle, even own brand super market vodka.
Boxed wine exists, and is a bit under half the market (by volume). Wine in glasses is still the majority of sales. Beer/cider/larger is sold in cans or bottles, with cans being about 2/3rd by volume.
I do drugs as well, but I don't typically drink alcohol. Maybe I am not qualified to speak on this, but in the US most of the cheap vodkas have been coming in plastic bottles for around 15 years now at least.
Hm... I think in Europe most if not all of the alcohol comes in glass (or also still sometimes a tin can). Only some beer is in plastic bottles, but most would say that is a sin and a no go and never touch it.
I've only seen plastic bottles for very small bottles: the type you get in a mini-bar or airplane. If you go to a supermarket or off-license you typically won't find non-glass bottles for regular-sized wine or spirits.
Boxed wine exists, and is a bit under half the market (by volume). Wine in glasses is still the majority of sales. Beer/cider/larger is sold in cans or bottles, with cans being about 2/3rd by volume.