Haha I haven't decided it yet so we will see
true 4k clarity in some of these games is hard to deny though, either starfield has been improved massively in terms of visuals or 4k is working wonders here, photos don't do it justice but I remember being very underwhelmed by its visuals on launch as even resorted to texture packs etc.
It is a shame no 5160x2160 3rd gen qd-oled monitors yet as it will be the way to go, can't find any info on the qd-oled but woled looks to be 2025 so I would expect qd-oled to beat lg to the punch but then as mentioned, we probably be talking about £1300 at least so throw in another 6/7 + months on waiting for prices to drop to <£1+k
What I may do is keep both so have the best of both, 21.9 for where games look/play better and then the 4k for the games where they look/play better on 4k.