While I understand that you feel good as you got the device configured, you would have been better off without gemini. The 'old' way as you call it would have resulted in you knowing the backgrounds and the inner workings of your router, making maintaining it a breeze and helps you actually understand your setup. Besides that, it would probably trigger you to rethink some of the things you now blindly have implemented because gemini did not show alternatives nor reasoning behind it. (something that most definitely would have been documented on the source pages)