Quite honestly, I find it remarkable the perception is a Model 3 AWD improves driver confidence. I was very surprised the first time I drove my car in snow, the back end kicks out at a touch of the throttle around a corner. In a straight line its totally fine, it might slide a tiny bit but its really trivial and not terribly concerning. Around a corner it drives no different than the RWD model. My brother has a RWD 3, and it drives just the same in snow other than the straight line acceleration. It brakes and turns just the same, the back slides if you're not careful with the throttle input even going slow around a bend. From my perspective, I think the AWD is worse for the average driver that buys AWD to feel more comfortable. It has no appreciable impact to the vehicles safety and stability, so giving the driver more confidence is likely not beneficial. Especially if this is a driver that feels they could use it.
To be clear, I think the AWD is great and a significant upgrade over the RWD models. But if the driver is scared about driving in adverse weather conditions, I don't see how it helps since its massively rear biased. It absolutely does not drive like a vehicle with full time AWD. In rain you probably would never notice, and on dry roads you surely wouldn't. Maybe im just misjudging how slow people drive in snow or something. If you drive well under the limit of the tires it makes no difference where the power comes from.
I've had both a mid range RWD and a stealth performance AWD now, and there is no question the AWD is superior in the snow. Of course a RWD with snow tires will still perform reasonably well, but I personally think if you live where it snows regularly you should have snow tires or at least all seasons with the 3 peak mountain snowflake rating regardless of what you drive. We had a snow storm last week that dumped 14-18" depending on where you measured, and I took the stealth performance on Michelin X-Ice tires out before any plows had come by our area and the car literally plowed its way through everything. Up and down hills, intentional sideways action, doughnuts in track mode, etc. The RWD is good, but the AWD is materially better when you have a real storm and are facing mountainous conditions.