Fair enough. It looks like pulque, at least, was recorded as not being used recreationally, which is probably what I was remembering, but even that I doubt, just based on human nature.
It’s still highly unlikely Alpharabius ever discussed political philosophy over a beer. There might have been local Jews that could supply it, but the cultural taboo would have long since been totally integrated. It wasn’t ye olde prohibition or something. And it’s still not supported that drinking is objectively, universally desirable in some aesthetic sense, which is kind of what “it is cool” suggests in the original context.