Good subject. Like many here, I've been camping & backpacking in the winter for decades. Rarely had the luxury of a stove in my tent. Typically it's not "needed" but there are times when it sure is nice.
What's needed is a good tent that will stand up in wind & snow, providing good shelter. In winter, a little bigger tent is real nice, 'cause there is usually more gear to bring inside.
As others have stated, a very good bag and a good pad or pads under are essential. When ya blow out that candle, or turn off that headlamp, and burrow down into the sleeping bag... It can be a long, chilly night!
A trick I learned long ago was to boil up a pot of water on the backpacking stove, just a bit before turning in for the night. Enjoy a cup of hot cocoa, and then fill a one-quart wide-mouth Nalgene bottle with the hot water. If you trust the lid (and I do) chuck that hot water bottle down inside your sleeping bag! Instant heat for the bag, and your feet! Also, there's at least one quart of water avail in the morning, that isn't frozen. That's real nice sometimes.
Lots of tricks to this winter camping/backpacking stuff. Most aren't hard, but ya gotta pay attention.
Will admit that I've been looking pretty hard at the Kifaru setups where a small wood-burning stove can be used. I'm "okay" without it, but am also at the point where I admit that it would be nice, having some warmth in the tent, at least when I go to bed, and when I get up in the morning.
Regards, Guy