@ Pallbearer…
I’m not exaggerating.
I don’t have the book on hand at the moment, but there’s plenty of PDF copies available at different locations around the net. Feel free to check.
And there is absolutely a section which describes how - for all intents and purposes - thinking the GB is wrong about something technically constitutes apostasy. They may phrase it in “theocratic” terminology, but make no mistake, that’s what it means.
It’s been discussed here more than once.