If someone else is talking toxic politics at work, and you don't contest them, you get their politics.
In development this may not be as easily measured but, for example, in fruit picking I worked alongside my girlfriend and at the end of day 1 I was asked if I would come back of my girlfriend was not asked to come back. I produced, she didn't and because she could not do as much she actually held back everyone else (not just her, a few mainly females, were not offered another day's work. We were all getting paid a daily rate, so there was a disincentive when someone who could not do as much was getting paid the same. As I say that is in a situation where output can be easily measured and compared, I'm sure there are metrics in development that allow for similar comparisons but can't be certain.
And historically, women are underrepresented in tech, and are not in a position of power. Conservative men are. One of the reasons why stuff like this gets such a much more negative response is because it's seen as "punching down."