I have! And an adult still has to pay the connection charges to offer that free wi-fi. Or provide the funds for a kid to buy a device to connect to said free wi-fi.
You can go down the rabbit hole as far as you like, but it's to no avail. At some point, an adult has to consciously enable the child to connect to the internet. Full stop.
I agree with the sentiment you're expressing however I think "consciously enable" might be taking it a step too far. Modern devices off no end of unexpected was to gain internet access.