OLED has horrible burn in. For phones they’re doing incredible mitigations but the fact is that the screen isn’t on with static elements for 8hours+ solid each day.
I don't notice it most of the time, but it really stands out on anything full screen. I think I would be rather annoyed if a three-year-old laptop did this.
I have two old cellphones mounted on the wall in my house that show time, weather, control the thermostat, etc. Most of the display is static. After a couple of years the burn-in is dramatic. I was surprised as I thought only phosphors burned.