When I was a kid, there were cigarette vending machines.
I am not that old.
I am not that old.
Better regulation, better enforcement, anti-smoking advertising campaigns, banning public smoking, and drastically reduced amongst youth and the general public.
Cigarette regulation to reduce smoking starting in the mid/late 90s is the poster child for public policy done well.
The regulations on selling tobacco in person AFAIK are only for cigarette and cigeratte labeled type rolling tobacco. You can still order perfectly cigarette smokable "pipe" tobacco online straight from an internet "vending machine" and probably a real one. Very few people know this though because it turns out to not actually be a much of a problem.
In practice I think most young people who want to drink will just get it from a "cool older brother" or steal it, whether from parents or corner stores. At least that is what I saw in semi-rural America.
People will do what they want to do, with or without vending machines and online ordering.