From that site, under the heading "What do you have against courtship?" we find:
"B) Courtship denies the authority of the father over the marriage of their virgin children. While they often give a veto to the parents of the woman, they specifically deny the authority of the father of the groom or the bride to choose a spouse for their children.
We believe that Scripture teaches quite clearly that the father does have the power to choose a spouse for their virgin child; and we see this in several Scriptural examples.
C) Courtship advocates generally deny the continuing authority of the father over the married son.
We believe, along with the Reformers and the Church historical, that the jurisdiction of the family is the primordial and fundamental jurisdiction, and it is not interrupted by the marriage of a son. (A daughter, on the other hand, comes under the jurisdiction of her new husband)"
Fortunately, civilization marches on, and it is no longer permissible for a man to own his daughter and sell her or give her away, which is what you are advocating in spite of your little disclaimer at the top of the page. News flash, for those who haven't heard it yet: we have outlawed slavery, which is the ownership of a human being. And your sons and daughters have rights of their own. The Feds are watching those who sell the daughters, and those who buy them. And, I might add, those who think that a woman doesn't have autonomy: she doesn't "come under the jurisdiction" of her husband, and you need to look up the definition of "jurisdiction". She comes under civil law, not biblical law.