"Game Programming Patterns" is obviously not a book about how to develop games in specific game engines. Like the title says, it is about general game programming patterns (that some engines might employ - or not). I think the target audience is people who want to know how games work under the hood and/or want to write (simple) games from scratch.

> My only really strong advice is to look around and consume other resources too, don’t just take this one as gospel.

True! But I would say this about any book :)