I would suggest changing the title to the actual title of the article: Adaptive PDFs.
Assuming the program works, the PDF will not actually look different to me than to anyone else looking at it, so there is nothing that "changes based on who is reading". It is just that text extraction, a wholly different (and much fuzzier) process than viewing the PDF, and something that the same person can do, will now return structured (Markdown) text. (One might say the PDF changes based on how you are reading it.) A great idea, IMHO.
Email the mods: <https://news.ycombinator.com/item?id=40493683>.
Having slightly different versions would certainly be a help in identifying leakers of certain kinds of documents to increase the odds of identifying leakers. That would be of interest to some kinds of organizations or departments within organizations.
Thanks, the title was little misleading, I just changed it.