There are some reasons on StackOverflow. There's an answer by someone from QZ specifically, who says it's only shown when you visit from an outside referrer and

There are some reasons on StackOverflow. There's an answer by someone from QZ specifically, who says it's only shown when you visit from an outside referrer and it's so you can skip all the content if you're not interested and jump to other interesting articles. https://ux.stackexchange.com/a/82966 https://ux.stackexchange.com/a/82966