Maybe a bit to dramatic
Whilst it correct that the use of radar warning devices is subject to a fine of €1500 and 6 points, these being devices that calculate the proximity of the radar camera and the vehicle. The manufacturers have a way round it in terms of advertising warning areas:
"Through a protocol signed with the Ministry of the Interior, July 28, 2011, manufacturers have pledged not to report the location of fixed and mobile radars, or other road control devices. The number of identified hazard areas will be far higher than the number of radars to encourage motorists to moderate their average speed."
So, you may find that maps of France no longer show cameras but rather have loads of hazard areas (as per the article).
Also, there are still going to be warning signs up prior to the fixed cameras, the old ones showing the camera image are being replaced with a sign indicating what speed you are going at, so if you see these then check your speed.
Anyway, hows it going to be enforced, if you are stopped, nope only hazard areas on this mate.