Kinde emphasizes its commitment to progressive enhancement in web app development, demonstrated through testing on outdated browsers like Lynx, which is notable for being a fully text-based browser without JavaScript support. Despite its age and limitations, Lynx can still be used to access Kinde's features, underscoring the robustness of Kinde's platform. The process includes navigating without a traditional UI, attempting sign-in methods, and successfully managing user access, such as suspending a user, all through a terminal interface. This showcases Kinde's adaptability and the user experience it offers even when modern browsing capabilities are unavailable.