That’s a cool post. My wife and I commute through the winter in Anchorage on fat tire bikes. There are so many people riding them now that you almost don’t need one. That is, two days after a dump, the trails are so well packed out by the all the snowbikers, that you can ride pretty well with a regular mountain bike. There’s a negative feedback loop going on or something.
And long-time local xc skiers all agree that there are many fewer skiers now in the woods than there used to be. Lots of people have switched to, or just started out on, snow bikes. From my experience, there is very rarely a faster method of human-powered travel through the snow. Riding the squirrly single tracks through the taiga on a sunny day is a good day out!