We have hard data now on the negative impacts of alcohol, even from moderate amounts. Research shows it is carcinogenic. Back when I was a kid there was talk of light drinking being good for your health.

We also have strong data on how its bad for your sleep.

Much of the talk of alcohol being poison in the past was from drunk driving, spousal abuse, spending all the families money. This largely applied to drunks. But now the data has come in a way that doesn't involve any of these traditional ills is still bad for you.