red·neck
ˈredˌnek/Submit
noun NORTH AMERICAN informal derogatory
--"typically a rural , working-class white person, often southern by state of origin and conservative  by political orientation"--

I see nothing to suggest a tendency to drive drunk in this definition so why demonize "rednecks"?

You might as well replace "redneck" with "Latvian" , "dwarf" or "Rotarian"