Are 5k monitors that popular? Do they even exist? I think it makes sense to make editor available on maximum number of platforms.
Things like filling rectangles or scrolling have been hardware optimized for years on Windows without using any OpenGL and it works even on ancient graphic cards. So I think it might be a better technology for a text editor.
Things like filling rectangles or scrolling have been hardware optimized for years on Windows without using any OpenGL and it works even on ancient graphic cards. So I think it might be a better technology for a text editor.