EDIT : i didn't saw your updated message on page 2.... my bad.
Sorry, but you are incomplete on your comment !
Yes, the first available vaccine was the Johnson for French national. Then quickly, when it as been evident that it was not "good enough" with the new variant, then MODERNA was also bring to the country. Even legal spouse/partner of French national can get it. People with Johnson have receive a moderna booster. My wife and my son are both vaccinated and boosted with Moderna/pfizer.