It's mainly there as it's an oooooooold monospace unicode font, and it was one of the few which Galleon had to choose from to package with QB64 back at the start of the project. It's purpose is for folks who might need such a font for use with the extended code pages in Display/Language, or for use with _MAPUNICODE.
Personally, I'd like to see it removed and replaced with one about half its current size. It's old, outdated, and I have no idea why the heck it has to be as large as it is!