Seeing the amount of sugar and sweeteners in the "mocktails" and alcohol free beers/wines, I'd say it most certainly does involve poisoning your body.
An espresso martini has 80% of your daily sugar intake. That's 25g of sugar. Moscow mule 75%, Sangria 70%. All of those in one single serving.
I'd wager most people don't stop at one drink.
Daiquiri has sugar. Espresso martini has sugar syrup. A gimlet has simple syrup. Irish coffee has sugar. Long Island Ice Tea has more sugar syrup than any single liquor. Mai Tai has simple syrup. Mojito has cane sugar.
Arguing that alcohol is bad because many popular drinks have too much sugar is simply a bizarre take. It's like worrying about second-hand smoke from too much gun violence.
I think normal cocktails can end up in similar place, especially if say juices are component.