On my last tour, I crossed paths with seven other touring parties. They included:
1 family (man, woman, child)
1 ex-couple (man, woman)
1 temp-group (solo man and solo woman riding together for a few days)
2 solo men
2 solo women
In all, 5 men and 5 women, and an equal number of solo men and women. So at least from my vantage point on that trip, bike touring appeared to be a completely gender-neutral activity, which I thought was pretty cool (even if it might not hold true with a wider sampling).
And none of those solo women I saw appeared to be particularly stupid.
Neil