IQ in high school as a predictor of midlife alcohol drinking patterns
academic.oup.com
academic.oup.com
https://wisconsinwatch.org/2023/03/do-wisconsin-residents-re...
I think you're misinterpreting that article. It's purely an observation that Wisconsinites self-reported more of what some team running a survey classified as "excessive drinking, there's nothing about causes.
I'm not from Wisconsin, but I know quote a lot of people who are, and I think the reason they drink so much is cultural: they have a much more relaxed attitude towards alcohol consumption, generally (e.g. aunts letting nephews/nieces drink at some family get-together). It's not so much they're "driven" to drink, they seem to enjoy it and not attach so much stigma to it.
I believe IQ is mostly BS, however I’m sure those ‘high IQ’ folk are more likely to have higher responsibilities that include business development, networking and added stress. I don’t think the takeaway here is ‘smart people drink’.