So in your expert opinion, what range is acceptable when using the car as a car, varied journey lengths, on and off a few times a day, which is typical for lots of users? 200, 150, 100, 50, or is it irrelevant because you can charge the car at home?
All cars, whatever fuel they use, vary massively in efficiency depending on a whole stack of factors, from temperature through driving style, to terrain and average journey length.
In cold weather, all cars, irrespective of the fuel they use, will be between 10% and 20% less efficient than they will be in warmer weather. EVs will suffer more in cold weather, and short journeys, because they use usable battery energy to heat the car and battery pack, rather than engine waste heat.
Most EVs have the equivalent of a pretty small fuel tank when compared to an ICE car. For example, a petrol engined car with a 50 litre fuel tank has a usable energy storage capacity of about 438 kWh. A Tesla Model 3 LR has a usable energy storage capacity of a bit over 70 kWh, perhaps around 74 kWh (the actual figure isn't clear from Tesla, AFAIK). Even though electric propulsion is around 3 to 4 times more efficient than a petrol engine, there is still a big disparity between the amount of usable energy available between the two.
Losing 20% of range in winter for an ICE car may not be that noticeable, even though most cars do lose this sort of range in cold weather. Losing 20% of range in winter for an EV, with its shorter maximum range, is far more noticeable. I gave evidence of this earlier, showing that my old Prius lost around 150 miles of range every winter, compared to the official range figure. This wasn't really an issue, as it just meant the range drop was from the official figure of ~650 miles to a real figure of ~500 miles. For me at that time it meant stopping to fill with fuel a day earlier in winter than I needed to in summer.
The key thing with any EV is that the "fuel" is very cheap when compared to petrol or diesel. I charge at night, using an off-peak tariff, that costs 9p/kWh. The effective cost of petrol (allowing for the efficiency difference) is around 40 to 50p/kWh. This means that using, say, an extra 20% or 30% of electricity to precondition the car, in order to reduce range loss in cold weather, doesn't really make much of a difference - the fuel cost will still be a fraction of the cost of using petrol or diesel.