The exposed bits are where you were sleeping, and it absolutely compensates for where the bunched up cloth is. And even if that bunched up cloth was a problem you can flatten that out to expose just the inside anyway, like the outside of a hard taco shell.
A made bed absolutely does not air out quicker. https://www.jacionline.org/article/S0091-6749(01)77320-4/pdf
The exposed bits are where you were sleeping, and it absolutely compensates for where the bunched up cloth is. And even if that bunched up cloth was a problem you can flatten that out to expose just the inside anyway, like the outside of a hard taco shell.