I find the Air France KLM Flying Blue program incredibly frustrating for booking awards. There are false positives for award space on their website, customer service representatives are often rude and incompetent, and most importantly they have a penchant for shutting down newly opened accounts that members transfer points into (such as from American Express Membership Rewards and Citi ThankYou Rewards) and immediately redeem awards from.
As a result I’ve limited the coverage I’ve given to the program. I don’t recommend using it for most purposes because I simply find the juice isn’t worth the squeeze.
So I don’t get too worked up over changes that are coming to that program, although those changes are noteworthy because they represent a spread of changes.