It’s not a question of it being worth reading. It’s a question of opsec, the tricks of the trade that allow SEALs to sneak in, get a job done, and get out alive.
When those current tricks are included in a book, it puts the lives of our specops warriors in direct danger. Or, by outing the tactics, it puts them off the table and makes them unusable.
Either way, it’s a violation of a very basic trust to cash in by giving out current operational tradecraft and other secrets.