Yeah, I just don't see the point.

If we're talking battle mechanics, we already have a bunch that essentially simulate the effects of being drunk (forced marches, misdirection, charm, even the Old status from Shisui, etc.). At most they could label something we already have or a combination of them as "drunk" or whatever. No need for anything new.

If we're talking RP, we already have a drinking emote and, well, our own imaginations. If you want to RP drinking or being drunk then just do it, nothing is stopping you. Heck, if you really want to go the extra mile (and get the RL visual effects too!) have a few while you're playing.

So if we're really just talking about not having consumable food/drink items that directly reference being liquor then, yeah, that's just kind of sad. I mean, you can already pretend that the orange juice is really a screwdriver if you truly want it to be. Otherwise you kind of come off like a 13 year old who just wants to see their character drink a beer in game because you think it makes them look cool.