For that matter, how is that even a criticism? A thermostat sits on your (interior) wall; If you want it to be aware of the outside temperature for any reason,

For that matter, how is that even a criticism? A thermostat sits on your (interior) wall; If you want it to be aware of the outside temperature for any reason, you either provide additional equipment that consumers need to mount outside their building (in such a way as to get an accurate reading whilst being weatherproof and having reliable power/connectivity)... or you just fetch it from an API based on your postal code like a sane person would