I presume you mean this article:

http://www.denverpost.com/2017/07/26/beer-sales-down-especially-among-the-millennials/

"Beer sales are down…especially among the millennials"

"Apparently, younger generations aren’t drinking as much beer as they used to. The data shows they now prefer wine and spirits instead. Research firm Nielsen showed a slight decline in beer penetration across the United States compared to 2016, although wine and spirits penetration stayed about the same. But Goldman’s research revealed a shift away from beer to wine and spirits amongst those 35-44."

That article in no way contradicts what this article has to say.   They're not even looking at the same time frame nor did the Post (the Washington Post in the case of the article you mention) make it up.

It cites research from Goldman Sachs.