Yes, printed books are far more convenient, especially in places that do not have internet service (shops, etc.) It is far faster to pull at book out and look it up vs. getting on a web page, then entering all your filters to get load data. I MUCH prefer books and Barnes is over due to produce another.
I actually asked this of Barnes a few years ago, as I like the manuals, too. They said it's probably not going to happen because of what others have mentioned. It's much faster and easier for them to update an online PDF than print a book.
I feel kinda bad for kids growing up with digital manuals. There is a lot of educational and interesting information not related to the cartridge and bullet that’s being reloaded for, that seems to get glossed over online.