I run my 4K monitor at 200% scaling, and I can still see font aliasing artifacts. You definitely can't turn antialiasing off yet, even on a "retina" display. We still have a ways to go before computer terminals are as readable as papaer.
Unfortunately on many sites with a supposed tech savvy public "everyone" will start to yell that it's just a conspiracy of vendors and that even 4K is nonsense because your eyes can't possibly see it. They'll show fancy graphs and link to wikipedia articles that supposedly prove that 4k, let alone 8k on desktop screen sizes (roughly 20" to 30") is completely nonsense.
Maybe vendors are picking up some of these sentiments and maybe this is in part holding back progress.
But for the next couple of hundred years or so I think we'll be more than happy with 32k~64k displays or something in that range.
Displays with pixels the size of molecules would effectively be a kind of real-time matter duplicator. Bound to happen one day, but not today ;)