Most thermostats do not have an external thermometer or internet connection.
They achieve comfort by setting a desired min/max temperature that ignores outside temp because that has nothing to do with indoor comfort.
I have an Ecobee that is set to heat to 68°F and cool to 78°F in the daytime. The only time I care about the outside temperature is when I could open a window to save money.
Probably fishing for leads on a romance scam.
Later they’ll ask for money.