Are you saying that defining half of 7-14 (or 3.5.7) drinks per week as heavy seems insane to you?
Current science proposes that even 2 drinks a week significantly increases cancer rate, and is the current suggested limit for health - I suspect it would be lower but for reactions like you're having. It seems likely that double or triple that is indeed unsafe.
Media is very careful not to shame their readers: https://www.cbsnews.com/news/alcohol-cancer-risk-what-to-kno...