The key part in Nico40's post is "dans une zone de circulation de l'infection définie par arrêté du ministre chargé de la santé".
This is referring to the list of countries we already know for the obligation to have a test before departure or on arrival. EU/UK is exempted from this, unless of course they want to change this list. Please, don't bring the fact that several EU member states have much more cases than some red list third countries*. This is another debate . The government may change this list and eventually include EU member states, but at the moment there is no change AFAIK.

* the statement below you can find on many official websites is, today, laughable (here, from ADP site):