The book came out several years ago
The authors made a pretty good argument that the rivets played an important role, and the press release does a very poor job of summarizing the book.
The key point is that the rivets on the first and last fifth of the ship had to be set by hand, which required that the rivets be made from wrought iron as opposed to steel. The rivets on the other three fifths of the ship were set with hydraulic clamps, which allowed the use of steel rivets. It is extremely difficult to make wrought iron with the same consistency as steel.
The authors pointed out that icebergs have a slushy surface, so an impact would cause the hull plates to bend rather than tear as would be the case of striking a coral reef. The failure of the rivets to hold the hull plates together allowed a much larger volume of water to enter the hull. Had the rivets held, the Titanic may have had enough pumping capacity to allow it to reach port or take a much longer time to sink.
The poor quality of rivets was by no means the only stupid mistake that lead to the sinking of the Titanic.