That article is mostly bollocks and if you rely on it you will have an accident.
What bits are bollox?
It seems to predominantly be explaining what the French signs mean, so has he got them the wrong way around, do they mean something entirely different, or is it just that the locals do not pay much attention to them?
My take from this topic is that nobody can agree including those living in France, I suspect the road signs are as documented but locals (especially older ones and farmers) may not always obey them...
...I certainly keep an eye out for the Yellow diamond signs and have believed these inform me I have priority, and after about a dozen trips riding in France have not yet had a car pull out in front of me - something that seems to happen in the UK where I know I have priority. I also notice French drivers on country roads drive at a fair pace and do not slow right down every time they approach a junction t their right, suggesting they either believe they have right of way or are not expecting another vehicle to suddenly pull out.
However as I do not have much faith in drivers at home obeying the priority rules I am used to being very careful at junctions and on roundabouts and ride in the same manner abroad.
It has to be said it is a shite rule and has made no sense since they stopped insisting that you had to have someone walking along in front of your car.