The thing is, Scripture is NOT UNCLEAR about what marriage is. Check out Matthew 19
1When Jesus had finished saying these things, he left Galilee and went into the region of Judea to the other side of the Jordan. 2Large crowds followed him, and he healed them there.
3Some Pharisees came to him to test him. They asked, “Is it lawful for a man to divorce his wife for any and every reason?”
4”Haven’t you read,” he replied, “that at the beginning the Creator ‘made them male and female,’[a] 5and said, ‘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]? 6So they are no longer two, but one. Therefore what God has joined together, let man not separate.”
7”Why then,” they asked, “did Moses command that a man give his wife a certificate of divorce and send her away?”
8Jesus replied, “Moses permitted you to divorce your wives because your hearts were hard. But it was not this way from the beginning. 9I tell you that anyone who divorces his wife, except for marital unfaithfulness, and marries another woman commits adultery.”
That's just it - the only people who think this article is on target are those who aren't familiar enough with the Bible to see that each of these "traditions" have a pre-existing Scriptural basis. I hate to say it, but we live in a day and age where if it ain't John 3:16, nobody's heard of it.