long focal lengths causes compression of foreground and background. short focal length do the opposite, they expand foreground and background. If you tilt the camera up with a wide angle lens, you bring the foreground even closer and move the background further away. What you end up is a keystone perspective.
If someone is not wanting this effect, they need to mind the tilt due to the expansion property of wide angles. Else they will need to fix in post using keystone correction.
I personally like this property when I intend to exaggerate distance of foreground vs background Similar but opposite to compression, when I intend to compress distance.
Both properties are tools in photography.