While OLED definitely has this problem, his real issue is using a too small DPI monitor. It's not a real problem in OLED equiped smartphones with high DPI so it

While OLED definitely has this problem, his real issue is using a too small DPI monitor. It's not a real problem in OLED equiped smartphones with high DPI so it really shouldn't be a problem on monitors as well. If you wan to point out that there is no large OLED display with a DPI > 200, yes that's the real issue at the moment but since 5K displays are becoming more common, I think it will be solved in relatively short time.