Why is there an assumption that women are being discouraged to enter STEM fields rather than men being pushed? Lets imagine if there were a social culture that

Why is there an assumption that women are being discouraged to enter STEM fields rather than men being pushed? Lets imagine if there were a social culture that rewarded men who took high income jobs, discourage men who selected their occupation based on interest, and allowed women full freedom to choose any occupation. How similar to our world would that look like? A find it a good question to ask is how society rewards people based on their decisions. Women that follow gender norms in their career choice, and women that don't. Men that follow gender norms, and men that don't. Using social status as a metric, who reaps the best rewards and who get punished the most?