"Ahem. First, I'm an Irishman living in France."
Ahem, Well, I'm a Frenchman living in the US, but considering that you are living in france, this quote: "sex & bad language are considered worthy of a 15 or 18 age tag on a film, and blood & gore creeps in under PG-13. Go figure." sound very weird to me. Unless there has been a radical cultural revolution in France, in the past 3 weeks...
"But by bringing more women into free software communities, we're not excluding any men "
Except that this so called 'positive discrimination' has been advanced in support of thing like, among others, http://projects.gnome.org/outreach/women/2006/
"Not really. In a European, North or South American, or Australian context, monotheist christianity has influenced local culture enormously. In North Africa or south-west Asia, Islam would be a dominant cultural influence."
sure, you just named a core reason for the poor treatment and recognition of women in these societies and this has nothing to do with FLOSS.
"Maybe some behaviour which was OK at 99% male becomes unacceptable at 80% male - honestly, I'm OK with that."
In the top 100 of the world chess player there is only 1 woman (Judit Polgar), I wonder what should be done to set straight this clearly misogynistic cabal, after all their numbers are worse than those of the Linux Kernel.
I suppose it is all that sex, booze and bad language at chess tournament that are to blame.