Point taken, but I think maybe the fragrance company is being a cheeky bastard about it.
We perfumistas all know the dictionary definition of Pour Monsieur. But in modern French culture, the word Monsieur is often used in a sarcastic/ironic sense if used as the emphasis in a sentence.
I can think of an alternative appelation of Pour Monsieur being used in the sarcastic sense that:
"This perfume is for the aspirational bourgeois monsieur who needs the reassurance that he's wearing a perfume above his class."
IMHO, a Monsieur does not need a perfume that says Pour Monsieur. He always knows he is a real Monsieur even if he's wearing Cacharel's Anais Anais or a cheap-and-cheery like Joop*.
*: Not biographical, I don't own Anais Anais; but I do own and still wear Joop Jump.