There's a difference between a role-model and a self-promoter. The role-model hacks away at lots of projects, has an active github, and develops lots of experience until they're at the top of their field. The self-promoter writes a lot of blog posts about "being" in tech instead of actually "doing" tech.

The cottage industry devoted to writing blog posts about how hard it is to be a woman in tech and all the sexism and hardship all women face along the way seems to be doing their part to continue to intimidate and discourage women from learning to code. But for the self-promoter, this continued imbalance offers basically limitless opportunities for career progression through pointing out sexism rather than through technical ability.

Easily 90% of the female engineers I encounter are from East or South Asia where these blogs aren't widely read. It's an interesting correlation, even if by itself it proves nothing.