I'll just assume that many non-Catholics, like myself, have absolutely no idea what authority Pope Francis' Amoris Laetitia exerts (or exhorts) as a "Post-Synodal Apostolic Exhortation." So, first, a primer on Papal texts.
An apostolic exhortation is but one of many different types of communications from the Pope to the community of clerics and laypersons that constitute the Catholic Church. It doe not define Church doctrine, so it ranks lower in Church authority than a papal encyclical. An Apostolic Exhortation is meant to encourage the Catholic community (broadly conceived) to undertake some attitude, disposition, or activity. (If you're familiar with Paul the Apostle's epistles-- to the Romans, to the Corinthians, to the Philippians, to the Ephesians, to the Galatians, etc-- you should think of Pope Francis' most recent Apostolic Exhortation in the same vein.) Pope Francis has so far issued only two encyclicals in his time as successor to St. Peter, one on climate change (Laudato Si': "On Care For Our Common Home") and one on charity and hope (Lumen Fidei: "The Light of Faith"). So, to begin, we should take into serious consideration the fact that Pope Francis opted to issue Amoris Laetitia as an Apostolic Exhortation, an encouragement to action or disposition, instead of a Papal Encyclical, which is second in authority only to an Apostolic Constitution (constittuo apistolica), the highest possible level of decree issued by a Pope.