I have been mildly entertained by people complaining about providers using their "this, that or the other" in order to make profit, but the same people not complaining about the free or heavily discounted services they receive... For all of them, I have this to say: There is no such thing as free lunch! If you don't want to get burnt, don't play with fire!
So Amazon uses some of your bandwidth to form a private mesh network... SO WHAT? If you don't like it, don't buy an Amazon device!
And if you think that in this current day and age you are NOT monitored constantly, then think again... Whoever wants to monitor you or spy on you will not need an Amazon device or a mesh network, there are way more easier ways to do this...
So get real, stop wining and live your lives.