Did you consider other reasons than sexism for the environment that you perceive as unwelcoming? E.g., I guess the ratio of introverts vs. extroverts is pretty different between Wall Street law firms and software developers.
Hm. I guess it was all in my head.
The extent to which discrimination makes tech more welcoming is debatable. It does have the immediate effect of increasing the number of women in tech roles, but it does so at the expense of putting them in an environment where they know that their male co-workers were held to a different standard and vice versa.
https://news.ycombinator.com/newsguidelines.html
Edit: your comment history shows a lot of political and ideological flamewar comments, and we've already had to warn you about not taking HN threads into gender war. If you keep this up we're going to have to ban you, so please don't.
The major difference (in my opinion) is that the Old Boys Club owns it. They know they’re not welcoming to women and for the most part they don’t care. But Silicon Valley, for whatever reason, absolutely insists that they’re welcoming and that it’s all in our heads. The Old Boys Club was frustrating but Tech is infuriating.