I think we're talking past each other a bit. The person you first responded to said that some problems exist, you said they don't, and I expanded a bit, agreeing with them.

Your position seems actually to be though that you can make smart devices acceptable if you're careful enough. That's probably true. However, I've seen the code people write, and I still personally wouldn't want a smart oven or any number of other such devices.

> Your repudiation appears to be about centralized services, not about “smart” devices as a general concept.

There's some truth to that. I focused on that point just because smart devices usually have a markup for their extra features, even though you don't really own the product, manufacturers have a habit of shutting them down, and most of the "smarts" are just figuring out how to generate extra ad revenue. That's not _all_ smart devices, but it's a lot of them. Contrast that with a centralized service like Overleaf, where I know I'm renting server time and disk space, and it's obvious what the threat models are (they can read anything sensitive, and I should probably make sure everything is backed up). Selling living room audio recordings on a device you paid more than fair market value for just feels a bit slimy, and I thought that might be a good touchpoint to illustrate what sorts of things can go wrong.