I definitely agree with the description that people in southern France are more laid back and nicer compared to Paris. Not necessarily as friendly to strangers as Americans, but still friendly enough in my view. Granted, this assumes that you already know at least some French.
What are you looking to study in France, and at which schools?
Speak for yourself. No one even guesses I’m American here, least of all when I’m speaking French. Hell, I’m from Texas too.