Prosecuting someone for deliberately injecting garbage data into another persons system hardly seems totalitarian.

> You own the device, so anything you do within that device is authorized

You're very clearly describing a situation where at least some of the things you're doing aren't happening on your own device.

>I do know that the CFAA essentially gets interpreted to mean whatever the corpos want it to mean - it's basically an anti-witch law

FWIW this is simply not true. The essence of the CFAA is "do not deliberately do anything bad to computers that belong to other people".

The supreme court even recently tightened the definition of "unauthorized access" to ensure that you can't play silly games with terms of service and the CFAA. https://www.supremecourt.gov/opinions/20pdf/19-783_k53l.pdf