Well this past winter here gas was more like $2.05.
I did see as high as 7xx kwh/m with my P85 and that doesn't account for power used plugged in, battery heating to charge, vampire drain which ICE do not have. Extra preheat time because the frameless windows freeze and hang up. Yes the windows freeze on my truck but they aren't frameless.
Far as temps, average January high is 25 low 9 BUT I have seen -26 and we can spend days or a week at a time not getting above single digits. That is a lot colder than Denver. With a 7 mile each way drive the battery and cabin heaters are working hard every time you get in the car and to charge.
I have seen the truck fall as low as 12.7mpg but normal winter is 14-15 summer is 17mpg.
The people who talk about cold not being that bad don't know what cold is, and it is devistating to to EV efficiency. On a 60degree day my 45mph 7 mile drive registers 270wh/m get down around zero and it is 700+ unless you preheat from shore power which is still energy used.
I can't argue the waste in production of gasoline, but a casual buyer who needs to see ads to get interested in Tesla is not going to care about that, they are going to care about what their daily use is.
Range mode will help by not needlessly heating the battery. Just remember to turn it back off before you charge.