You claim that STEM discriminates women today because of something that happened in 1890.
I would like to see some evidence of that related to today, not something from 1890. And not your empty statement of "what was once a pattern still persists to a lesser degree".
You replied to a comment about historically - and what was once a pattern still persists to a lesser degree.
The roots of higher education were laid with the exclusion of women baked in.