Not true - even at worst case conditions 2.5 - 3.0 miles per kWh an EV is still 2-3x more efficient than an ICE car.
While I'm aware that EPA figures are fantasy for most drivers, I too have beat them easily on multiple vehicles, and routinely do with my Bolt even during fairly "enthusiastic" LyftUber driving and no holding back on AC here in muggy Florida.
The key element for EVs to go mainstream is for these considerations to become effectively irrelevant to the typical driver. The typically ICE driver doesn't much care / may not even be aware of weather-based impacts on efficiency / cost of operation.
EVs take a double hit in cold weather as declining battery capability combats high HVAC needs. Main stream Americans are not used to / will not tolerate a cold car cabin as the "price" of successful EV ownership. Starry-eyed greens and technology enthusiasts often lose sight of bottom line reality as demonstrated by the typical American consumer.
Perhaps the next gen batteries won't have temperature issues, and heat pumps may be our salvation as to winter cabin heating energy, but both will take awhile to get right in a robust and cost effective mobile application.
If and when a 200 kWh battery pack weighs 200 lbs and costs $2000 and has little degradation down to -20*F, few will much care about having to run a 7 kW resistive heater to keep the cabin toasty.
OTOH, if battery capacity / weight / cost specs don't soon substantially improve, then there will likely be more intense focus on maximizing cabin heating efficiency - that means heat pumps, and those are a fair bit more complicated than cooling-only AC systems (I'm an HVAC contractor - those details pay my bills)
There is an enduring concern that heat pumps don't work in cold weather, typically defined as below freezing, but as with many other consumer products, Asian manufacturers have put paid to that with models that provide 80-90% of rated capacity down to below zero while still maintaining efficiencies 2-3x straight resistive heaters, so it can be done as to thermodynamics, but at what cost and efficiency in vehicular applications?