Most mass scrapers, on the other hand, simply grab the raw HTML underneath. ShieldFont exploits this difference through an automated process called OpenType glyph substitution.
That said, because the whole defense rests on scrapers reading code rather than screens, taking a screenshot of a shielded page and running OCR on the image can still recover the real words.
Screen readers used by blind readers also work from the code, so they read the decoys aloud. ShieldFont ships with a beta feature that provides those readers with the real text instead.
You entirely sidestepped the scenario and issue. In the example given, the copyrighted work is being produced directly onto a medium that obfuscates its provenance, literally. Yet, gives an opening for another to publish it in such a way, that they could claim it's their copyrighted work. They would be lying, and they would be wrong, but then you would have to prove to a body composed of ancient mummies who uphold an ancient code, why one of the few ways they thought they understood technology and codified into their verification process, isn't actually showing them the truth this time. Do you know how to defend a copyright claim?