Guessing, but probably to get more accurate engagement stats. It would be better to assume a user has read most or all of the article if they clicked that butto

Guessing, but probably to get more accurate engagement stats. It would be better to assume a user has read most or all of the article if they clicked that button. Maybe also a way of determining if the introductory paragraphs were written in an engaging way, because they determine whether I will continue reading or not.