PDFs are both awesome and terrible at the same time. I've seen screenshots of emails added to pdfs alongside tables that span multiple pages. Because you can do almost anything and guarantee that it'll look the same regardless of how or where it's viewed is a big selling point for a lot of businesses. It's this flexibility (i say madness) that makes PDFs notorious, and why some labs have document parsing as a leading product (see https://mistral.ai/news/ocr-4/).