Don't think you watched the video propperly. They show checkerboard looks better than native with same number of pixels (1527p). Native 4k obviously looks better, which is clearly seen in this video.
Some aspect showed that checkerboard is better and have better anti aliasing on this video , on top of that many GPU offer DLSS which is checkerboard with machine learning.
EDIT: On top of that you need to zoom in a lot to compared which is waste of effort and time, when you playing video games you will not notice especially if you are moving your character.