Alcohol is certainly safe, just not while operating machinery or so much that it poisons you. These are pretty much modern problems. Back in the day, it was safer to drink alcoholic beverages than water. Alcohol wasn’t as strong back then, or use industrial methods so this is like comparing apples to apple juice.

Used to be safer than the water. Some places here in the US, it may still be.

fwiw while fermentation is at least as old as farming, distillation into liquor only came about in the renaissance. you have to get really competetive to overdose on beer.

Alcohol is an endocrine/hormone disruptor and has all sorts of effects on the body.

It's kind of like saying sugar isn't bad by bringing up LD50 (13.5g/lb bodyweight). Immediately dying from overdose is probably the last thing people have in mind when discussing what foods are bad for us.