The article really focusses on range loss when cold, but as far as I can see that isn't really true. The reality is there is lots of range loss when using the cabin heater, which obviously one is most likely to do when cold. All modern Tesla's use heat pumps for cabin heating, which ~halves the range loss, but it's still substantial.
I have a 150 mile round-trip commute when I need to go in to the office. My "summer range" (really more "not-winter range") is 240+ miles. I stick to posted speed limits for efficiency, 60-65 MPH. This winter I've been getting back home with 30 miles of range to spare. I haven't done the math or recall what power draw my gauge cluster reports when I toggle heat on/off, but I do remember it reduces my range estimate by ~5 miles when I turn the heat on.