One (correct, in my view) attitude prevalent in non-trad games that the fun stuff is what happens at the table rather than reading a glossy book.

Unfortunately, this means that some designers have the attitude that reading the actual book is a chore that has to be done to get through to play the game, so let’s make it brief (possibly good), and minimalist, giving just the technical information needed to play (bad).

I want flavour. I want the book to sell me on why the game is worth my time playing over the many alternatives. I don’t want technical manuals.