I don't agree with your initial claim that "all other mice" have red (visible) lasers. Some are not visible. I have a Dell wired USB that I have used for about 15 years. I simply like the feel, and the laser is not visible at any time.
All depends on the optical wavelength of the laser in the mouse.
The mouse still works the same, just that the laser is not visible. The "black magic" is, that there is no added "voodoo", the laser operates on a non-visible wavelength. It's just a choice that the manufacturer makes...