So, to be honest, I used to think this too, until I got an old crt television so I can play my old console games properly[0]. It sits next to my normal tv, and so me and my fiance can play splatoon together side by side on screens I hooked up an hdmi to rca converter to it and my switch dock. The loss of resolution makes it hard to read the text, even though the screens are relatively the same size. May be in 1995, I never thought I really needed that much more resolution, but a 1K screen does fit in more details, some of them important like text, into a screen in a manner that I appreciate once I've seen it in a game.

I do think high frequency rate monitors are a gimmick, but I did read somewhere (lost the link) that scientists do think the human ability to see resolution isn't really physically restricted beyond just the limits with one's own eyes. So, don't knock it I guess and claim 640K ought to be enough for anybody just yet.

[0] it is an "in" thing to play "retro games" now, although generally some older games do just look better on a crt over blocky pixellated hdmi converters.