I agree with you as literally started, and am not a Wikipedia naysayer, but that again is descriptive linguistics. People do say that. People also do say "y'all aints gots no Beefaronis?" (One of my favorite examples heard by my own ears in a c store), and people do think differently of either than they do as what is sometimes called "blackboard grammar." I would recommend John McWhorter as a linguist who describes this better than I can. Or just say to yourself "huh, interesting opinion" and walk away; I swear I won't be offended :-)