I think that @dodi was speaking about CMAS-certified divers operating in clubs for no profit, whilst the article you posted is written form a PADi DM - of course two entirely different worlds...This site says completely different things than you state:.
Scuba diving in France: things to know before you go
This post may contain affiliate links. It means I may earn a commission if you book or purchase something. This is at no cost to you and support this website. Learn more here. Like many things, the French like to do it differently. Scuba diving is, unfortunately, one of those things that don’t...worldadventuredivers.com
So i think you will be good to go (with a guide) to do proper dives up to 40m.
For people outside the CMAS (or BSAC) community it is really hard to understand this "other way" of diving...