Alcohol is more addictive and more deadly than the illegal Schedule I drug marijuana. If leaving the latter laying around for a 6-year-old child to find is child endangerment, then isn't leaving the former laying around for a 6-year-old child to find even greater child endangerment?
Is alcohol dangerous in the hands of a 6-year-old? Of course. But so is liquid drano, a switchblade, sulphuric acid, a gun, and a whole host of legal products.
What is your hangup with alcohol, for crying out loud?