And your scriptural support for this is...?
21Submit to one another out of reverence for Christ.
22Wives, submit to your husbands as to the Lord. 23For the husband is the head of the wife as Christ is the head of the church, His body, of which He is the Savior. 24Now as the church submits to Christ, so also wives should submit to their husbands in everything.
25Husbands, love your wives, just as Christ loved the church and gave Himself up for her 26to sanctify her, cleansing her by the washing with water through the word, 27and to present her to Himself as a glorious church, without stain or wrinkle or any such blemish, but holy and blameless.
28In the same way, husbands ought to love their wives as their own bodies. He who loves his wife loves himself. 29Indeed, no one ever hated his own body, but he nourishes and cherishes it, just as Christ does the church. 30For we are members of His body.a
31“For this reason a man will leave his father and mother and be united to his wife, and the two will become one flesh.”b 32This mystery is profound, but I am speaking about Christ and the church. 33Nevertheless, each one of you also must love his wife as he loves himself, and the wife must respect her husband.
I suspect that this is till difficult for you.
No it isn't. First, you're fudging your paraphrase, and second, the word authentein likely does not mean "usurp authority". It's inconsistent with the context.
It's not my theory; it's well-attested in the research literature.
No, it doesn't. It says that (as a consequence of sin) men will rule over women. There is no law in the entire OT that is given to someone other than the one expected to fulfill the law. Do you sweat while you eat your food? If not, by your reasoning, you're breaking the "law" (v. 19). Did God "command" that childbirth would be painful? Obviously not. He said that it would be... that's a consequence, not a command.
A man is the head of his own wife only. As I said before, this does not give men general authority over women.
1 Tim 2:
9Likewise, I want the women to adorn themselves with respectable apparel, with modesty, and with self-control, not with braided hair or gold or pearls or expensive clothes, 10but with good deeds, as is proper for women who profess to worship God.
11A womana must learn in quietness and full submissiveness. 12I do not permit a woman to teach or exercise authority over a man;b she is to remain quiet. 13For Adam was formed first, and then Eve. 14And it was not Adam who was deceived, but the woman who was deceived and fell into transgression. 15Women, however, will be saved through childbearing, if they continue in faith, love, and holiness, with self-control.
I'm sorry if these things hurt you but it is not about paganism or wives not teaching their husbands, it is just women being submissive to men as God has put it.