Are you disagreeing that distilling several liters of cask strength grain alcohol around an open flame is more dangerous than sealed containers of propane and gasoline?
As to the gasoline, please do note that incompetent distilling was being compared to incompetent storage there. So then the gasoline hasn't been properly capped off and has been left in (for example) a garden shed with insufficient airflow. That's once again likely to be more dangerous.
Do also consider that people in the US regularly deep fry using a gas burner. It seems self evident to me that heating a vat of oil to near the smoke point and then making it sizzle, all the while over an open flame, has to be vastly more dangerous on average than what you described.
Also you don't necessarily need to use an open flame to distill. An electric range works perfectly well.