I'm no fan of copy protection, drm or whatever its called today. But if I
choose to ignore what the author wanted and expressed when they created
the item, it is my risk.
One occasion comes to mind. A PDF for a specific purpose where having a
printed copy (laminated) is the only practical use. It had extensive no
printing protection that no pdf reader could overcome. Printing the screen
worked just fine, and we are proud and happy users of the information in
the format we required.
That was my choice. If the author of the document wants to sue, they can
I don't expect the authors of the software to take that risk for me. How
we forget. Dmitry Sklyarov spent time in jail when he exposed the flaws in
Adobe's forgotten scheme. Adobe eventually even opposed the prosecution
(probably to attempt to foil a revolt among their developers). Not a
pleasant situation to be in.
So if you want to be a poster child for fair use rights, fight in court
and make law, great. Maybe the authors of Okular don't want to do that.