It can be a kind of tradition... even if people don't mention it. Remember - practically in all cultures sometimes it was normal to think that woman is a source of sin (She asked Adam to try a forbidden fruit etc).
And secondly according to Frazer and his "Golden bough" people in some native tribes were sure that the reason of hurricane, flood etc was women's action. Women for example couldn't touch any staff not to turn it into a stone, or not to make Gods angry with people... (their theory - women were the reason of bad things in the world)
We also can recollect other fact - woman-witch. How many poor women they burnt into the fire during the Middle ages! They thought those women used magic to kill the cattle, to send calamity...
Maybe it that's why they do it? It is just a supposition.