Vanity?
Boredom?
What’s that, BTW, a printer?
I’m not quite sure I made my point here: We have a strangely angled opening for ventilation ‘covered’ by a non-angled protective bit. This just looks broken to me.
And, yes, it’s a printer (HP something, nice and small).
Sven, my point is that if was broken by design then the designer must have thought to “add something” to it.