Yes. Under the exact same rules. You're playing badly laughing about it and continuing to do horrible - People COULD report you for griefing/inting, if it's being made clear enough that you just don't care. The reportable part is the lack of effort. You're not TRYING to succeed, instead you're continuing to play badly and laughing about it. Will you be punished for it? Most likely not. Is it reportable under griefing/inting? Technically yes.
Whether intoxicated or not.
That's sort of the point I'm trying to make - That the intoxication doesn't actually matter, as it isn't against any form of rule. You'd fall under the same guideline problems whether sober or obliterated.
Side note - I play terribly when I haven't smoked. Medical Marijuana user here, and without smoking I'm extremely scatter brained and anxious, as well as have a terrible time focusing on anything in game. When I HAVE smoked I tend to be able to slow down and focus on what's going on in game, rather than my mind constantly running through real life things as well. So please don't feel negatively towards all users due to a few idiots out there spoiling the whole bunch. I totally agree some people abuse it, and I hate getting the "im drunk lul" in ranked at 2 AM as much as anyone else, but unfortunately it's just not against the rules(And I don't think it should be. It'd be nearly impossible to actually enforce.) - That's why I'm saying they can be reported for things related to, but not directly.