The key points of the text revolve around the importance of positive user reviews and engagement in determining an app's success, rather than negative ones. The author argues that users are more likely to complain about issues with an app than praise its functionality. Many examples are given, such as Monument Valley and Reuters' News Pro app, where changes to the app led to a sudden drop in ratings and increase in negative reviews. In contrast, apps like Flappy Bird, which received overwhelmingly positive reviews, were able to achieve great success. The text suggests that developers focus on paying attention to user feedback and engagement, rather than just the number of installs, and introduces the concept of in-app feedback as a way to reduce negative reviews and increase positive ones. According to Instabug, using in-app feedback results in 80% less negative reviews, making it an invaluable channel for creating a positive user experience.