Having dealt with University level biology/botany/dendrology textbooks for about 50 years or so, the harder they try to be all things to all people, the worse they fail.
I think it's practical to learn the same thing from three different sets of words/authors. Practice at home to use it in the bush.
Also, to thumb the pages in the pouring rain, looking for an answer, will spoil your day.
I've got the old classic: 'Wildwood Wisdom' by Ellsworth Jaeger, a 1992 reprint of the 1945 original. Many have built their strengths on this one, over time.
I say: "Good." With people like Mears adding continued popularity to the skills, they won't get lost.
Me? There's a chapter on making birchbark utensils/cups/bowls that I want to mess with.