I've never seen a demographic breakdown of HN, but I'm 37 years old. I'm definitely not the oldest guy here, but I see history repeat itself regularly. I remember when people used location tracking as a reason to not own a cell phone. I'm talking about flip phones, mind you, not even iPhones with GPS receivers. I recall the bulk of complaints in that vein died down around the time Google Maps for phones came out. If…
A mobile phone that doesn't leak your position is impossible, but a voice activated assistant that doesn't spy on you on by the orders of some company is pretty much possible.
You're missing the part where said company has no motivation to not spy on you. There's absolutely nothing preventing companies from doing so today (in the US), while on the upside the opportunity and motivation for them to collect all your data for possible profit gains later is extremely high.