Frankly, this seems like a great article pointing out exactly why the VC and startup space is such a male dominated area. So many clear male biases here (exude confidence, fake it until you make it, etc)
I think they may be referencing a confidence gap[1]. 'Fake until you make it' seems like it's referring to imposters syndrome[2]. I haven't found any evidence that it's more prevalent in women than men. Anecdotally women's credentials & skills in tech are often more scrutinized than men which makes 'faking it' seem less possible.