It sounds like a good enough deal. Not as great as the good old days of promos like UA and Hilton where the earnings were substantially better. But still better than nothing.
However I'll have to wait til their web designers get their act together. Logging into flyingblue.fr there is no mention of this deal. Accorhotels.com has it clearly mentioned, but the registration doesn't work. Possibly because I block trackers and they feel the need to use trackers.