tl;dr: LLM-assisted coding has made building native GUIs (specifically SwiftUI on macOS) so cheap that the author built half a dozen personal apps—a Markdown viewer, music player with LLM agent, Apple TV remote, etc.—without writing UI code by hand. He argues that historical justifications for TUIs (cross-platform reach, SSH, density, accessibility) mostly don't hold up, and that developers should stop building new TUIs and default to native GUIs, driven by CLIs on the backend when remote access is needed.