Watching user reactions shows that these ads felt intrusive rather than helpful, especially when notifications mimicked system alerts or arrived frequently. Tracking uninstall rates, negative reviews, and complaints reveals growing distrust toward apps that used this method. Patterns of repeated opt-outs and sudden app deletions act like behavioral heatmaps, highlighting frustration points in the experience. These signals pushed both users and developers to associate push ads with spam-like behavior, leading to stricter platform rules and ad-blocking habits.