I'm not sure what you mean by 4k(1080), but... I have an LG 38WN95C-W Ultrawide [0]. It's great for coding, great for video (IPS LCD so obv not deep OLED blacks), great for games...
3840x1600 resolution, which is roughly 3/4 of 4K cut horizontally.
3840x1600 resolution, which is roughly 3/4 of 4K cut horizontally.
The screen you referenced would be even less than that at 2x scaling factor: 1920x900, which is even fewer screen estate. A 4k ultrawide is not retina, so doesn’t cut it.