[OkayPhysicist]

The risk of methanol poisoning in moonshine is grossly overrated. Simply put, you have to do some stupid shit to end up with dangerous amounts of methanol. The methanol content in a beer, wine, or mash precursor to liquor production will be absolutely trivial, unless you are are doing something ridiculous like trying to make liquor from tree bark (the Greeks have a drink like this, it's heavily warned against in home distilling circles).

So why was methanol poisoning common during the Prohibition? Renatured fuel alcohol. To stop people from drinking fuel ethanol, the government poisoned the supply with methanol. People tried to come up with jerry-rigged solutions to remove the methanol, and more often than not failed. Some less scrupulous experimenters sold their results anyway, where it worked its way into the black market supply chain.