Might just be my middle-aged eyes, but I recently went from a 75Hz monitor to a 160Hz one and I’ll be damned if I can see the difference in motion. Granted that don’t play much in the way of twitch-style shooters anymore, but for me the threshold of visual smoothness is closer to 60Hz than whatever bonkers 240Hz+ refresh rates that current OLEDs are pushing.
I’ll agree that 30fps is pretty marginal for any sort of action gameplay, though historically console players have been more forgiving of mediocre performance in service of more eye candy.