With the weight of the batteries in back it might be fine. The issue with RWD trucks with traditional drivetrains is the lack of traction owing to all of the weight being over the non-drive wheels. Driving my F-150 in the snow or rain was always dicey because of this.

That being said I wouldn't touch a Tesla with a barge pole for reasons numerous.

Batteries and the engine. The engine sits in line with the wheels rather than being under the hood of the car. That puts all the weight right next to the driving tires.

But agree, cybertruck is a really silly purchase for numerous reasons. The only reason you'd buy it is to signal your support for Elon. It's a very bad vehicle.

2wd is just fine if you keep a load of firewood in back all winter.