3. That's just because those people are using it as a perjorative
It doesn't really matter what you call them because those who hate will use that term to further their hate regardless. I was born in the Southwest and have lived here for most of my life. I understand what you're referring to very well.
Disclaimer(s): No, I did not mean to piss you off. If it does, ask me and I'll remove it. Thank you for your cooperation. Cheers!