It's a two tier world that's coming. Either you know your gear inside and out, or your gear knows you inside and out.
What other option is there? Same could be said about how knowing the internals of your car, or your house, your plumbing system, your electrical connection, hell even your health all matter because not knowing means the providers / maintainers / engineers can take advantage of you.
Caveat emptor doesn't go away with time. And I don't believe trying to use the hammer of legislation on the various hooks of businesses is an effective or even ethical way to try to "solve" it.
Disconnecting it from the internet and possibly even sabotaging the wifi module will ensure that prying eyes will not have access to your information.