He is not concerned about having over half his income from French sources, or by B2 language certificates, but has acquired nationality just by gifting loadsofmoney to Notre Dame and other religious edifices.
Apparently this qualifies in the rayonment de France category.
Accounts for why I suddenly saw loads of his books in French at our local Tabac and in the supermarket of the next town. I mistakenly thought it was an uncanny coincidence since I had just left an entire English set of his books in the village book box and they disappeared within the day