ANewAlias
Your understanding of feminism seems to be founded on one faulty belief -
1) Men and women are the same except for our genitals. Therefore, when there's a gender imbalance (eg. STEM) it's due to the patriarchy and not because women are less adept in this field.
I don't know anyone who believes that men and women are the same. They're obviously not.
Men are generally bigger and stronger than women. Most men I know, for instance could run 100m faster than me. This is because their male body is different to my female body.
It is actually this belief that men and women are inherently different that is at the cornerstone of many feminist beliefs, and the reason that we NEED sex segregated spaces.
However, in the example you gave (STEM), biology isn't usually the issue; young girls consistently outperform boys in STEM. It's once they become teenagers that this changes. This isn't likely to be because girls IQs drop at age 13, but because of social factors.
2) Being a woman is tied into how you are brought up. You can't be 'in the wrong body' because we're all the same (bar sexual organs).
See above.
3) We're all the same but us women need special favours and protection because i. men are bad ii. we're women and we're different and need these special measures
We're not all the same.
Women need protection from men because men kill 2 women per week and rape 85000 women a year (in the uk alone).
Men as a class oppress women as a class more than any other group of people in history.
Not all men are rapists; but ALL rapists are men.
Now that's not 'man-hating.' That's fact. All facts.
So in answer to your question, your understanding of feminism is completely flawed because it is founded on one hugely incorrect idea; that feminists believe men and women are the same.
'Equal' does not mean 'the same.'