"Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user)."
The purpose of the GNU system is to give users the freedom that proprietary software takes away from its users. Proprietary operating systems (like other proprietary programs) are an injustice, and we aim for a world in which they do not exist.
To improve the use of proprietary systems is a misguided goal. Our aim, rather, is to eliminate them. We include support for some proprietary systems in GNU Emacs in the hope that running Emacs on them will give users a taste of freedom and thus lead them to free themselves.