Do you mean then that English speakers write the name of every French city, including Paris and Strasbourg, as French speakers do and also pronounce them as French speakers would except for Paris and Strasbourg?

Edit: I had never thought about Strasbourg, really. I see now that the adoption of the French spelling in English is relatively recent and also Marseilles and Lyons used to be written differently.

Edit2: Dunkirk seems to be the main (only?) example where the French name is not used.