Editable PDF on Mac are only Read-only on iPadOS. Users would like to use the Apple Pencil on the iPad to sign documents.
I needed to fill a government form and sign it at the end. While filling most of the PDF fields was doable on a Mac, signing it would be more convenient on an iPad with the Apple Pencil. However, when I downloaded the same document on my iPad, it was restricted as a Read-Only PDF.