In that case you wouldn't have seen it mentioned. When you go through the erase data and settings process, it asks you if you want to remove the device from Fi

In that case you wouldn't have seen it mentioned. When you go through the erase data and settings process, it asks you if you want to remove the device from Find My and disabled the activation lock, at which point it prompts again to login to iCloud. If you didn't have it enabled, it wipes without prompting.