you can publish anonymously. no one hinders you. But in case it is illegal, prosecuters have evidence - which isn't malicious or bad per c'est. And, knowing which printer has been used for the illegal thing, doesn't mean the location of the printzer is known, too. So, no probs or conflict with that from my side.

If you really afraid, just overlay your PDFs with noise of yellow dots before printing. Or apply a digimarc pattern onto that with gibberish. That will mitigate recognition unless the digimarc pattern is recognized and removed, which is kind of difficult if unknown (https://www.digimarc.com/). There are possibilities.