I dunno, I'm playing on an OLED screen myself. I've played FF7 Rebirth, FFXVI and Guardians of the Galaxy at 30 FPS on a 42" OLED sitting maybe 3 feet away from the screen and it was fine. Now I game on a 32" OLED monitor sitting maybe 1.5 feet away and I'm also completely fine (recently played SH Townfall at 30 FPS, although I'll say I noticed it more in that title maybe because it's first person). I play almost every game at 60 FPS because 90% of the time there's really no reason not to but on the games where there is a huge difference in image quality and graphics I put it on 30 and after 5 minutes or so of getting adjusted to it again I forget I'm even playing at 30. Likewise when I played Stellar Blade at 90+ FPS because I have a PS5 Pro I genuinely couldn't tell the difference with 60 FPS.
I am pretty sensitive to shimmer, shitty AA and other upscaling artifacts but I also never got the hate against the Switch 2 screen for example. Maybe I'm unique

60 FPS is still my preference but 30 is still completely playable for me, although I would've liked a 40 FPS mode.