> might not be fully applicable to the development of mainstream commercial software that has to try to be all things to all people, including considerations like internationalization, accessibility, and backward compatibility.

Windows Terminal has none of that. And his refterm already has more features implemented correctly (such as proper handling of Arabic etc.) than Windows Terminal. See feature support: https://github.com/cmuratori/refterm#feature-support

Also see FAQ: https://github.com/cmuratori/refterm/blob/main/faq.md