The article says, “In fact, in verse 14 Paul specifically says that his written words are what define proper conduct. This actually suggests the concept of sola scriptura ; Paul is assigning authority to the written Word. He does not say, “The church will tell you what this letter means.”
It seems as though they do not realize:
Paul could not be proposing “sola scriptura” because he did not know his letter would be counted later as scripture.
As an apostle and a leader in the One Holy and Apostolic Church, he was acknowledging his own authority to teach, his authority given by Christ to lead the Church. Otherwise, if he were advocating “sola scriptura” then he would only rely on OT passages and possibly the written gospels of Matthew, Mark, Luke, and John.
As for the passage about forbidding marriage, the Church has authority to bond and loose and as times change and to improve “laws,” not by dissenting from Christ’s teaching but putting it to greater use.
And the scripture verse, 1 Timothy 4:3, “They forbid people to marry and order them to abstain from certain foods, which God created to be received with thanksgiving by those who believe and who know the truth.“ Notice how closely it is tied to abstaining from certain foods, and he doesn’t say anything about priesthood. Almost clearly talking of either Jews who regarded the OT laws about food, or those today promoting veganism / vegetarianism to be the only right diet. The Church declares that Christ declared all foods clean in Mark 7:19.
As for abstaining from marriage: Matthew 19:12 says “For there are eunuchs who were born that way, and there are eunuchs who have been made eunuchs by others–and there are those who choose to live like eunuchs for the sake of the kingdom of heaven. The one who can accept this should accept it."