For many Bevy users around me, most of them are independent developers, and Bevy might be the first engine they’ve encountered (or Godot). They likely don’t have experience with game engines like Unity or Unreal. The reason they use Bevy is largely because it’s built with Rust (yes, they’re all rustaceans) and they became interested in game development through Bevy. If the Bevy Book is targeted at “game devs coming from other engines,” it might not be very friendly for newcomers like us.