Wall Street is much less sexist than Silicon Valley. I've been there. I know. Yes, there are some young men on Wall Street who act boorish, drunkenly hit on women, and generally cause a great deal of discomfort for those around them. They don't get promoted. They aren't trusted. They'll eventually get fired if they keep that shit up. In the Valley, they do get promoted. Misbehavior actually makes a young man more attractive to the VCs, deep in the throes of midlife crisis. That makes the difference. In one place, it's discouraged and relatively uncommon. In the other, it's rampant.

The amount of impropriety that you see in the VC darlings is off-the-charts. I worked (briefly) at an ed-tech where the married executives openly flirted with female subordinates (and one was fired for refusing advances). You'd never see that shit in finance, these days. That era ended when the people raising VC now were in diapers.

I would guess that "the upper echelons of American politics" are also less sexist than Silicon Valley, given that there are women succeeding in US politics, but wouldn't know from direct experience.