Yes, it probably is. But it is a very big difference that someone can prove that a specific printer they are in possession of was used by comparing the printed

Yes, it probably is. But it is a very big difference that someone can prove that a specific printer they are in possession of was used by comparing the printed papers, or if they can just look at the paper and get the serial number and time the document was printed. (And if they have a database of who purchased the that printer, they know where they should start to look)