This seems like the opposite of reasonable. Now some font license is expecting me to keep track of how many people a document gets shared with? Dystopian. What

This seems like the opposite of reasonable. Now some font license is expecting me to keep track of how many people a document gets shared with? Dystopian. What if I print it? Why is that allowed, but a digital file is not? How does that mesh with "Licensed users can use my fonts in any way they like"? Also what does it even mean with a read-only format? Every file format can be ripped and converted, even if there is no widely known tooling to do so. A read-only format is not a thing that is possible. You can always just take some screenshots, or use a scanner, and reconstruct the font.