Yes, I agree but for me personally I don't care even if that dystopia happened. It's still worth it for me, again, personally. I'm against mass-surveillance because then it affects everyone, whether you agree on it or not but in this case I'm actively buying this thing and expose myself to it.
It is not. The difference is choice. Mass surveillance does not offer you a choice about participating, or ties that choice to some everyday activity. Putting an Echo in your home is a choice.
Choice can be a very weak consolation. Just like how not driving isn't really a viable choice in many regions (although nobody is technically being forced to drive), if choice makes surveillance acceptable, that choice could easily be eroded to the point of being merely a theoretical option. "You want to live without surveillance? Your choice, because we respect that choice so much we have set up special surveillance free zones in Pennsylvania"