The article discusses how Apple and Google are changing the way push notifications work, with a focus on giving users more control over what notifications they receive and when. The companies are using on-device models to summarize, reorder, and rewrite notifications, which can make it harder for marketers to reach their target audience. This shift is similar to what happened with email, where providers like Gmail and Yahoo began to filter and categorize messages, making it harder for senders to get their messages through. The article suggests that this trend is likely to continue, with push notifications becoming more intermediated and controlled by the platforms.