Also I’m pretty sure we’d notice if the government turned into the kind of government that disappears people for having the wrong opinions and it’s not like I can’t get rid of the various devices that listen in if that happens.
That's the point though. If you have Alexa set up to control your heating, your lights, your oven and everything else, it's not going to be that easy, is it?
And it's not as though these things happen overnight. You're not going to wake up tomorrow and find that the government can listen to you through Alexa and it's as simple as throwing it away to "solve the problem". It happens gradually. For your "benefit". So we already have facial-recognition CCTV here to "keep an eye on terrorists", for example. That can easily be extended to other things without us knowing about it until it's too late.
If you read the article upthread about the Xinjiang province, it started there to control the small Muslim population. Now it extends to every single person in that area. Even the communist party itself is controlled by "Big Brother" and the surveillance system, and they were once the ones in charge. WiFi is controlled, transport is controlled - everything is linked into one network, and that includes the inside of people's homes.
Again, have you read 1984? Watched a programme about North Korea? If you lived there, or China, would you buy Alexa? Presumably not, because you don't trust the government - so why do you think our government is any different? They could do exactly the same thing as the Chinese are doing and people are already buying devices that mean they could do it even more easily.
Madness.