You are told that you have to something something France but it is just an information.
Namecheap disagrees. From Namecheap's support page:
> Any company or individual residing within the European Union as well as in Switzerland, Norway, Iceland and Liechtenstein can register a .FR domain.
https://www.namecheap.com/support/knowledgebase/article.aspx...
> Date of birth (in the YYYY/MM/DD format)
> Country of birth
> NOTE: If “France” is selected in the Country of birth field, the registrants should also provide the city of birth and zip/postal code:
I was born on 1970-01-01 in 75001 Paris, France. There you are, an .fr registered.