That’s for 2x scaling, of course, but I don’t think fraction scaling creates a good end result, unless everything is vector, which decidedly, very little is.
8k at 28" is "retina" at just under a foot.
So depending on how far you sit from your screen PPI can matter more or less to you, but when we finally get 8k panels we should also finally be getting people in retina range most of the time.
8k / 120+hz is the holy grail for me.
I wish they sold screens still.
It does get rapidly better after 60, though. I think I can stop telling a difference at around 80. So there is some hope that we can have 4k@better-than-60 in the near future.