TL

”Lastly, Paul seemed to think that the marriage relationship does reflect the relationship of Christ and the Church (Eph 5:22-33). I think I’ll go with Paul on this one…”

but you are not going with Paul on this one.

”For no one ever hated his own flesh, but nourishes and cherishes it, just as the Lord does the church. 30 For we are members of His body,[d] of His flesh and of His bones. 31 “For this reason a man shall leave his father and mother and be joined to his wife, and the two shall become one flesh.”[e] 32 This is a great mystery, but I speak concerning Christ and the church.”

The two shall become one flesh is a reference to marriage — of which Christ emulates. IOW Christ’s relationship with the church is likened to the oneness of a marriage. It is not the marriage relationship that reflects the Lord and the church. It is the relationship of Christ sacrificing Himself for the benefit of the church that is likened to a marriage. You have it backwards. And it is Christ’s example of sacrificial love that husbands are to emulate. It is always Christ that is the example. Human institutions cannot reflect or be the example of anything about God. God is the example of life and love which we must all learn to reflect.