Very good question, pawful!
Your very last sentence sums up my thoughts on this; how can we possibly know, when there is still so much we don't know about the olfactory system? l would love to hear Luca Turin's thoughts on this.
On the face of it, it does sound like sexist claptrap, in the absence of any evidence to the contrary. And as you say, there are & have been many great female perfumers.
l will be watching with interest to read others' thoughts on this.