There aren't even that many women in tech who could tell such stories. Your argument is really quite worthless because it could be used to prove anything.
In any case, as I mentioned in another comment, a collection of stories is not a good way to gauge the problem. You need to put it into context - number of women in total, and also, what happens to men. Stories like this suggest that only women ever have bad experiences at companies. But you can find lots of male reports of being unhappy at a company, too. Why isn't that reason for men to quit in droves? Presumably the Uber-woman is happy with her new job at Stripe, too.
In any case, as I mentioned in another comment, a collection of stories is not a good way to gauge the problem. You need to put it into context - number of women in total, and also, what happens to men. Stories like this suggest that only women ever have bad experiences at companies. But you can find lots of male reports of being unhappy at a company, too. Why isn't that reason for men to quit in droves? Presumably the Uber-woman is happy with her new job at Stripe, too.