A man who was born in France, who has lived there for the majority of his life, who married a French woman, whose children were born in France and grew up there

A man who was born in France, who has lived there for the majority of his life, who married a French woman, whose children were born in France and grew up there, who has French citizenship - is French. The fact that he is also Jewish and Polish doesn’t make him not French. Whereas, a couple of Americans (who also happen to be Jewish), and who’ve never had any particular connection to France, are not French.