This may be a very subjective observation, but everytime I ask people, more question marks occur.
When using a mobile touch device or laptop with touch screen, some (observed) people do not mind the fingerprints on it. But as soon as it comes to a screen without touch functionality, these people got annoyed by the smudges on their screen.
Technically it's pretty the same, I compared surfaces next to each other and fingerprints were visible in the same way. This lets me conclude, that there must be some constraints in the user's model which causes this behaviour.
I have not made a study about this, but observed this over time. Is this a fun fact or a scientifically recognised issue?