Why?
This module may very well be installed "upside-down", and if one person has it so in their rig, may not others also?
It's already in two public racks, so there are other people out there who already think this is a good idea.
The Intellijel Planar can be installed and used in this manner, as can almost any joystick (X-Y controller), look at the panel design of the "Choices" module by Flight of Harmony, for example; also there are a number of modules by Synthwerks that are designed to be installed either way up.
I'm sure that this particular entry on the ModularGrid database was not created by accident and somebody actually intends to install this module 'arse over end' in their own rig, so let's be a bit more open-minded, eh?