The first problem to overcome if one wishes to support that idea is that alcohol had other uses than getting plastered. Weak ciders were ubiquitous before refrigeration because they were safe to drink when the local water wasn't. It was also a pain reliever before there were many others and used as a disinfectant.
You need distilled alcohol (>25% ABV), without sugar, before it starts being an effective disinfectant.
https://en.wikipedia.org/wiki/Hyponatremia
Under "Causes": Excessive drinking of fluids.
> When sodium levels in the blood become very low, water enters the brain cells and causes them to swell. This results in increased pressure in the skull and causes hyponatremic encephalopathy.
My point being the fact that something is "neurotoxic" says little about its practical safety.
It may take much less alcohol to be neurotoxic, so that does say something. Near anything can be harmful given too much.