A feature may be considered "terminal" if a significant percentage of customers who can use it do not frequently utilize it, and its removal would not significantly impact revenue. The process of sunsetting a feature involves confirming the condition is terminal, stopping new sign-ups from accessing the feature, dividing users into two camps (real users and dabblers), and announcing the end-of-life to remaining users with a clear explanation and suggestions for alternative solutions. By removing unloved features, product managers can create space for fresh ideas, focus on core functionality, and improve overall user experience.