I'll respectively disagree. Granted, my personal experience is with antiquated southern racism, but I'd hazard most of the people in the OPs' stories do these things
because they don't realize they're wrong.
In the "Well, why wouldn't you comment on a woman's pregnancy when evaluating her for a job?" sense.
There are certainly overt, aggressive, predatory stories included. But the bulk are things I can see being said in social or professional company.
Or as Colleague B puts it: "When asked for a paragraph, my first reaction was that I didn’t have the sort of big bombshell stories being looked for."
Borderline, casual sexism is important to vocally fight too.