Your article is biased against alcohol consumption, and while much of what you state and cite is interesting and pertinent, much of it gets lost in your agenda of demonizing alcohol. The reality is that the science is still out on this, and there is not an understanding nor a consensus of what the overall effects of alcohol are, and this further is clouded by all of the genetic, environmental, and lifestyle variables that exist for people all around the planet. Any amount of alcohol might be bad for one person, while it may actually improve brain function and reduce the risk of cardiovascular disease in another… we simply do now know. The research published in BMJ does not claim to have reached a conclusion, and instead merely suggests that previously claimed health benefits may not be as clear as previously thought. However, the study also found that individuals with the studied genetic variant had a lower risk of cardiovascular disease at any level of alcohol consumption, so further research is needed to understand why; this is clearly an important question as there may be a genetic cause, even though the research made an attempt to control for it, that attempt depends on randomization rather than an understanding of the causal factor.
When it comes to alcohol, the science is clear that it is bad to drink to the point of inebriation, to drink to the point of inebriation daily, to drink just before going to sleep, and to drink while pregnant. It is also understood that any amount of drinking increases the risk of cancer from slightly to moderately, but it is not understood how that mechanism works in individuals.
The bottom line on alcohol: more research is needed.