Earlier quoted context omitted.
It’s not dose dependent though, it’s a dangerous poison that causes cancer. Your other examples are completely different. Tylenol is closest, but you’re really talking about overdose. Drinking a couple of glasses of wine a day isn’t an overdose. Yes, there may be some nasty chronic effects of tylenol too, but I think you’re trying really hard to fit a square peg in a round hole.
Is there a specific definition of poison you're working with? You say that there's obviously no amount of poison that's good for you, but by that model of poison why do you assume that alcohol is a poison? Doesn't that become the question at hand?
The question is why we're trying so hard to make something healthy. The answer is obvious, because we like it. You don't see doctors trying to come up with justifications for why we should drink arsenic or cyanide, just as long as it's tiny amounts.
Alcohol causes cancer, heart disease, obesity, diabetes, anxiety, and many nasty things. It may be one thing to tell people that their glass of wine a day is OKAY, but we shouldn't be telling them it's "healthy" without good reason. The better analogy is smoking, because the harms are more similar than people think.