After a few more snowy drives with the Sottozeros, I still have to agree with Mvdaog, at least in part. Having driven several Subaru's (Outback and Forester only), FWD (most recently Bolt and Jetta), and now the MY, it seems clear that temporary loss of traction occurs more often with the RWD biased MY. We've had until lately hardly any snow this year so I haven't been able to play around nearly as much as I'd like, but I do feel like the off road assist may help it not fishtail as often. It does seem to compensate when loss of rear traction occurs, and it probably isn't as unsafe as it feels, but as Bjorn noted in the video way upthread, I'd still rather not have the 0.5 second "oh, sh*t" feeling occur while driving up a mountain pass. For me plowing through corners was a rare problem with FWDs or Subaru's, but fishtailing (even though short-lived) happens often.
I'm not sure this applies in "real life", as I'd imagine rally car drivers may not mind something that's less stable(esp to an average driver), as long as they can get around the corner faster. Obviously this all also very much depending on driver capability/experience/different cars they're used to. My last RWD car was a 1979 Pontiac Bonneville Safari wagon so there you go. Is the old maxim "FWD is safer than RWD in the snow" not true anymore? Maybe it was always an oversimplification but I do think for an average driver correcting for plowing is more natural than for fishtailing, and it's easier to pull than push a car up hill in snow.
I love my MY (apart from this) and want Tesla to succeed in cold weather states. To me it seems beyond silly that with all the complaints they've had from M3 and now MY AWD owners that they don't have a slight front-biased "snow mode" with a warning badge on range reduction or what have you. It's supposed to snow here some more for a few days and will hit the passes playing more with "off road assist", but it would seem preferable to have the snow mode option keep traction control on etc...
People these days (like me) are used to FWD or more neutral AWD systems, particularly in cold weather areas. I just don't see Utah and other mountain states turning into Tesla country when all those people (like me) used to Subaru or FWD cars are fishtailing and complaining (like me) about it. I agree that "feeling safe" is not as important as "being safe", and to me I could be convinced that it corrects itself quickly enough to "be safe", but "feeling safe" does matter too.