Increasingly, I read online reviews that ding a baking book as being not credible because the recipes do not include weights. Yes, Americans tend to measure by volume, not weight, but I believe that a lot of time, the decision about whether to include weights is made by the publisher, not the author(s). There are some baking books that include both types of measurements, including Peter Reinhart's books and King Arthur Flour's Baking Companion and Cookie Companion, but they are few and far between. I'm curious - is my understanding correct?
FWIW, I have a digital scale and use weights whenever possible but don't reject a book if it offers only volume measurements.