That chart is total bs. I really hate when people use it. According to it you have to be 2.5 feet away from a 50 inch display.. what a joke. I can see the pxielation in text on my 22 inch 4k display from 2.5 feet away so its crazy if it thinks you need to be that close on a display so much larger.
You must be some kind of mutant.
I have 20/15 BCVA, and I can barely see 27" 2560x1440 display pixels from 2.5feet away.