No it doesn't, people need to stop saying this.
You just get used to it.
The same way turning Nightshift or TrueTone off makes you think momentarily that you're screen is blue as can be, when in reality a day or two later you realize it's still actually pretty yellow - you just got used to what initially appeared really blue - your screen didn't magically get warmer overnight, just like new displays that look yellow don't magically get cooler.
Wrong.