I would love to upgrade to an OLED but my screens are on at least 16 hours a day with semi-static content. That's a hefty price to take a chance on burn-in.
Living with a C9 65" as my main television, not computer monitor, while I acknowledge the picture quality is incomparable from my point of view I am in the camp of that for a general work computer screen it would be best to wait for micro LED technology to spread. OLED still suffers the risk of burn in but this is mostly from fixed elements where the screen is level on for days if not years. Still not worth the degradation that will come as most elements are fixed and always on display with Mac OS.
So for the most part a well lit IPS display will serve users just fine these days and reserve OLED for the living room.
The extra real estate is a way bigger productivity enhancer than smoother fonts. Like there's not even any comparison.