the regional language movement in France has typically been a traditionalist, right-wing endeavour, and certainly not a progressive one

What contact have you had with, for example, the Occitanist movement today?

redstar:

No one speaks Occitan in France as a native language.

Yes, they do. They are old people now, but I personally know quite a number (and among in-laws in my family) who learned and fluently spoke Occitan at home and in their local environment before being taught French at school.