We have a lovely new colour laser printer. It is pretty sweet... except I can't use it anonymously. If I print something that annoys somebody, like maybe expose corporate or government corruption, or express an unpopular or dangerous political opinion, it can be traced back to me.
This is done with little yellow dots scattered across the image. You can't see them easily. They are intended to fight counterfeiting of currency; there is no law mandating this; some (not all) printer makers do it to mollify governments. And hey, I'm going to go out on a limb and say that counterfeit currency is a bad thing that hurts us all. But to solve that problem I'm not willing to end privacy and anonymity of the printed word.
So imagine that I do want to use my printer for anonymous communication. Say I call my printer manufacturer to ask how to turn off the narc bits: chances are, I'll get a visit from the goon squad to ask me what my intentions are. And chances are I'll get added to a list of "troublemakers".
That sounds like good company. Count me in.