https://psmag.com/social-justice/truth-wont-admit-drinking-h...
The group of moderate drinkers is also the group of the most healthy. That doesn't necessarily mean that moderate drinking is healthy.
Because guess what else correlates with moderate drinking? Affluence.
Guess where poor people fall more in either the "never or hardly" category or the "binge drinking" category. Either you feel like you're too poor to afford to drink and thus do so only rarely. Or you've just completely given up and all your money goes to drinking.
What else correlates with affluence? Overall health outcomes. If you're poor, you also can't really afford to go to the doctor regularly.
So what the study really tells us is what we already know: having a reasonable amount of money is good for you.