I don't understand why it even happens. With all high-profile cases in the last few years, can people hold it for a while? Or everybody is hiring 19 year old boys who physiologically can't?
I think a large part of it has to do with the fact that young college students and/or recent graduates building startups and hitting it big with VC funding.
It's effectively giving kids that haven't grown up a large sum of money.
Even so, do these VCs not install any kind of adult supervision when they put their money on the line? Sure, they don't want to just bring in their own CEO, but a little bit of guidance along the lines of "this is a fucking workplace, not somewhere for you to play out your immature sexual power fantasies and jeopardise my money" would go a long way.
Until they have a chance to answer the complaint, we should probably reserve judgement. However, if even 10% of this is true - I can't comprehend how anyone would think this was a culture that would work in 2017.