Health conscious drinker here. I have a double bourbon every few weeks. My diet is perfectly balanced. Alcohol still is not healthy and the rest of my diet has absolutely zero to do with that. I am healthy in light of everything else I eat; any individual item is still healthy or not.

Yes, some harms aren't linear no-threshold in their nature. Doesn't change the fact that the unhealthy doesn't become healthy because you eat a salad for lunch.