7 beers a week sounds like alcoholism to me but that's maybe because of "a week" and "7" parts.
Many of them report regularly consuming over 30 drinks a day. There is a huge spectrum.
I've been mulling this study over since it hit the news a few days ago, and I haven't dug into the actual paper enough yet, but I'm wondering if they adequately controlled for under-reporting. A lot of people who say "one drink a day" really mean "3 or more drinks a day" and are either too ashamed or too self-deluded to be able to admit it-- whereas I suspect most people who say "less than one drink a day" are being more accurate because they can actually remember multiple 24-hour periods when they didn't drink (unlike a drinker who has or is developing a problem).
Source: Have alcoholic tendencies myself, recently brought it down to 4-6 drinks a day but getting it lower is proving very difficult.
I never drunk two days in a row. Although I've been drunk two days in a row by drinking 6 beers one day and not managing to sober up during sleep.
I had alcoholic uncle but I never noticed how much he actually drinks only that he needs alcohol regularly so I equate any drinking regularly with alcoholism.
This doesn't sound like alcoholism to me but that's maybe because of the "moderate" part.
[1] https://www.cdc.gov/alcohol/onlinemedia/infographics/excessi...