I live in South Louisiana and grew up around people speaking creole. Kinda like the girl in the video... Some Creole has enough crossover for a French speaker to understand and some of it is like a completely different language.
I learned enough Creole as a kid to pick up on what my Creole relatives were saying, but I haven't retained any of it. I don't know many people who speak it as more of their main language anymore. It's mostly just bits and pieces of phrases now. I'm sure once you get down more into the "swamp" area people may still speak it a little more regularly.