Re: I do think....
But then you're putting longevity before massive private data slurping.
The only good IoT thing is one you make yourself.
It's relatively easy (for an IT person) to use something like an rpi zero w as a hub/thermostat (using Tinycore so read only), and then use something like ESP8266 devices with decent temperature sensors (ie MCP9808 or better yet BME680) to make far better IoT/home automation sensors than the expensive (pretty) commercial rubbish people are buying.