Drinking wine and living longer are correlated, but it is not likely that one causes the other. It is more likely that there is something else (such as disposable income) that causes both.

Higher income leads to better food options, having time to exercise (and actually doing it), making use of healthcare services, coupled with the fact that these people likely only drink that 1-2 glasses of wine each night, and outside of social events, may not drink any other alcohol. so yeah, it’s less about the wine than it is all the other socioeconomic factors that drive the sort of lifestyle that person would have.