If you go to Dr William Silkworth's site, and read some of his other papers than the ones that were put in the Big Book under "The Doctor's Opinion" you will find that in several papers he wrote over the years, he mentions that alcoholism can 'mimic' many other mental illnesses.
As a recovering alcoholic for many years now, I can honestly say that during the 'practicing' of my disease I did exhibit signs of being a Sociopath, as have many of my sober alcoholic friends, however, I do not believe the percentage of sociopaths in alcoholics is any higher than in the general population.
As a matter of fact I believe it is less.
However, I can agree, that during the 'throes' of their drinking careers, alcoholics, at least some of them can exhibit traits common to a sociopath. They can also exhibit traits common to Bi-Polar, Chronic Depression, etc
Alcoholism can and does 'mimic' other 'mental illness.
J M H O from observation, discussion, and working with other alcoholics.
Love and hugs,