It's probably personal preference on a channel like France 24 whereas the BBC will remind presenters and guests to wear a poppy where possible and have many to hand at the studios. You only have to look at ITV's Charlene White and the feedback she has had by not chosing to wear one on air to understand why they would do this. No-one is going to notice if a France 24 presenter isn't wearing a poppy but if the presenter on an World/NC simulcast at 4am then someone will. Anyway let's not turn this thread into Poppywatch.
Watch it and find out.