Wholly aside from the privacy and control implications of this antifeature, these dots are actually a significant impediment to the normal use of my laser printer. Sure, they aren't visible when printing on to white paper in a single pass, but when printing on transparency or coloured paper they are very visible, and especially so when running multiple passes (for composition of images without a computer).

They also affect me when I use the printer for producing PCBs using the toner transfer method - the dots act as an etch resist and impose an uncorrectable noise of copper dots on to an otherwise excellent result.