Hmm. I had always understood, as you had, that this was not possible - at least until one had been here 5 years, after which time the member state is obliged to treat an EU citizen as its own in Soc Sec terms, afaik. There is an "ATTENTION" paragraph - at which time I guess the applicant should be referred to the Free Movement Principal which states that one cannot be a burden on the state for those first five years. .
On the other hand, is the second link assuming that one has worked at some time in France since it's all under the RSA umbrella and it's made clear that this is for those who have worked in the earlier pages?
I'm just musing here but it's interesting.
"I couldn't sleep very well last night. Some noisy b*ggers going around in automobiles kept me awake." Ken Miles