Why would anyone want to hack into your Wi-Fi, free Wi-Fi is available almost everywhere.
You are seeing, on your “reset” iPad what every iPad, iPhone or smart watch will see, it is a basic inbuilt function, it is there with a brand new iPad straight from the shop.
They would only be able to use it when they were in range of your hub/router which is very limited, basically within 20-30 metres, or yards if you are old like me.
What you must not do is sign in your reset iPad to your apple account.
Mike