The less you talk about drinking the more he'll hide it from you. Ditto with gambling and sex. My parents talked about everything besides sex and I never drank or gambled in excess. And I'll leave this post at that.
I guess my original post wasn't very constructive. I wanted to say that seeing ads probably doesn't cause alcoholism, but OTOH, being unable to handle the thought that your precious snowflake could get to know about X too early is a sure way to lose his trust if he does get to know. And the OP indeed seemed a bit paranoid.
How about you deal with your irrelevant problem on your own?
Maybe don't let your kid that DOESNT EVEN READ yet zombiefy itself?
Maybe complain to Google/Apple about particular ads? Install some ad blocking software? Pay for youtube red? Purchase the ad-less versions of the apps?
Basically don't think that your inability to deal with the world warrants nationwide heavy handed regulation, please
I'm not trying to say that it causes alcoholism. I'm just responding to someone dumping a useless anecdote.