Just like everywhere else: you are free to do whatever you want, provided you are willing to accept the consequences.
In this case, the consequences of publicly disagreeing with the Société Générale's accounting practices are €8000.
Or, perhaps,
"The AFM has no jurisdiction over me, so they won't collect. As a US citizen living in the US, I am not subject to the absurdities of French laws, or French witch hunts. All they get from me is a vow to never go to France."
Which is kind of a pity. France is beautiful, and the food is delicious. [I'm tempted to add, "It is truly unfortunate that the country is infested with the French", but ain't nobody got no sense of humor, either.]
In this case, the consequences of publicly disagreeing with the Société Générale's accounting practices are €8000.
Or, perhaps,
"The AFM has no jurisdiction over me, so they won't collect. As a US citizen living in the US, I am not subject to the absurdities of French laws, or French witch hunts. All they get from me is a vow to never go to France."
Which is kind of a pity. France is beautiful, and the food is delicious. [I'm tempted to add, "It is truly unfortunate that the country is infested with the French", but ain't nobody got no sense of humor, either.]