Hush, Kukri...

I'm not an expert, but If I'm correct nowadays in order for an appeal on the jus soli the parents need to have been residents in France for five years. Even if this were the case, he cannot now appeal for naturalization. As an adult, you need to be a resident of France and be of 'good moral character'. Neither applies.

Mr Jovicic arrived in Australia from France with his Serbian-born parents in 1968 when he was just two.
His parents could've been anything from tourists to settled immigrants. I see no reason to consider a Serbian-Australian French just because he spend two years of his early childhood in France in the 1960's, to be quite honest.