Lots of junk science out there. It makes better headlines. However, it is true that if you drink a beer everyday the rest of your life you will die.
much of this IS junk science - for example, it is possible to come to exactly opposite conclusion using the same sets of data!
The research paper being discussed here focuses on increased dangers from cancer yet claims any positive effect on cardiovascular system from drinking alcohol (in moderation) must not be there because..., well, just because.
It is clear that many "scientists" in this area are trying to pull some numbers to make arguments that suit their preconceived notions.
In my limited experience looking through the literature, it does seem there are (small) cancer risks associated with alcohol consumption - but the increases are tiny or non-existent for common types of cancers and only significant for cancers that are relatively rare.
For example, you may double your chances of developing larynx cancer if you consume 50g of ethanol daily. But the current rate is 3 cases per 100,000 people, and I would suspect that majority of those people may have been predisposed to these types of cancers for other reasons (genetics, smoking etc.) - and survival rate is >70%.
Meanwhile, there are 1.5 Million heart attacks/strokes in US alone, and 800,000 people die from cardiovascular deceases every year in US. (1 in 3 deaths). So decreasing your chances of developing cardiovascular decease, even by a relatively small margin, say by 5-10%, reduces your chances of dying a lot more than doubling of rate of say 10 relatively rare cancers (such as larynx, pharynx, stomach etc.).
Regardless of all these statistically "massaged" studies, the one thing that appears over and over again is that moderate drinking substantially reduces mortality rate over non-drinking/abstaining population. Even after correcting for various factors (such as abstainers being recovering alcoholics/not healthy to begin with, social factors associated with drinking, social status etc.). The mortality rate decrease benefits max out at about 2 beers a day, every day, but there are still benefits even at 5-6 beers a day (over abstainers group), the so-called J-curve. Drinking daily, low-ABV drinks, instead of binging, drinking slowly and with food, increases benefits. Drinking irregularly (for example abstaining during work days and then doing a lot of shots on Saturday night) is bad for you.