[alkonaut]

Yes I think these are mostly game development patterns for when you aren't using an engine like Godot/Unreal/Unity, or if you intend to write your own engine.(Personally I find this 100x more interesting than game development using ready built engines - but then again I never intend to write a finished game ever either!).

It's general softare development knowledge, tangentially related to game development, perhaps because that's an angle that people - especially self-taught developers - approach development from. One can argue that the title/selling point is misguided. It's an introductory programming book, angled towards non-engine game development or introductory game-engine development, aimed at self taught developers, is my takeaway.

Most design patterns can be anti patterns in one setting and useful in others. That's not really specific to game development. You can't ever sprinkle them :)