I don't see the problem with calling an Australian and Aussie, a Pakistani a Paki, a Scotsman a Scot, or a Frenchman a Cunt.
Do you think it's okay to insult french people like that?
yes, I think it's ok to be disrespectful towards those people, who knows maybe they just need a good beating.
I think it's rude to call French people that word. It would be wise for you to read up on French culture and maybe you would change your mind about them.