Woofgang, didn't know about that law - but they have many laws in France that are quietly ignored! A lot are still Napoleonic - until a couple of years ago it was against the law for women to wear trousers - the lady policemen complained (it was their uniform) and there was a movement to repeal it, which may have happened by now.
I never bought foie gras, but it would have been incredibly rude to refuse to eat it when offered and I spoke to quite a few people who explained the changes. The industry is important and France will never give it up, but want to make it acceptable to others - hence the 'goose, here's lots of food' approach. I don't support gavage, but I stick to it that the geese did not look distressed in any way.