I think what the OP means is that some shooters purposely use a limited DoF for their landscape shots. Creating an image that has a sharp foreground and slowly tails off, with the far background out of focus, but still with enough focus to make out what the objects are.
It seems to give the image more 'pop' and offers the appearance of depth more-so than just shooting at infinity or using hyperfocal methods.
I did see a nice example of this taken on a A7R with 55/1.8 it's much more difficult to do with a wide angle lens due to the larger DoF