Women aren't being systematically oppressed ~ but confidence issues might lead them to believe that they are, even if they can't identify any actual causes.
The real systematic issue seems to me to be that women aren't getting help in the confidence apartment, hence they can't easily stay standing in the face of something that may well crush one's self-confidence.
And there may be many, many things in workplace, not just interviews, that can feel defeating... interviewers are there to filter out those who can't handle the strain of the job, those who don't have the qualifications, etc. And even if that's overcome, then the job itself may overtime wear one down.
Burnout and imposter syndrome aren't nice to run into... :/