Is it open rebellion against God to argue for equality of women in marriage?

Yes, it is rebellion against God to claim that the husband is equal to the wife in marriage.

The New Testament is clear that the husband is the “head” of the woman, just as Christ is “head” of the church.

The analogy is absolute and not confusing.  Christ is hierarchically superior within the structure of the church, just as the husband is hierarchically superior to the wife in the structure of marriage.  This is what God wants.

Feminists are trying to solicit open rebellion against God and the Holy Bible by arguing that husband and wife are equal in marriage.  This is not true, according to the New Testament.