Oldsalt:
In living memory we have gone from crude ideas like that thing to modern motorbike like comfort on the snow....
I remember the golden age of the sled when you went in groups, had a few drinks on the trail and didn't go all that far. The machines weren't all that reliable, a crash meant you rolled in the snow more than anything else and they were hell on your back lol.
That much said I don't think there are too many riders that want to go back to a 1970 Elan or even a high end sled of the day. Not only has technology changed but the culture changed.
You used to ride to get someplace like a cottage or ice hut. You used to stop and talk to people because this was novel and someone stopped might need assistance, and ofcourse my fav a trail of beer bottles would lead to a good ice fishing spot lol.
Now stop on a trail you get run over...
People ride to ride and see where the trail goes ( kids also add break and enter and steal all you gas at the camp )....
Drinking and driving is no longer funny at these speeds....
And something as simply as affordable is gone too with insurance and trail permits high fuel costs....
So you can envy the old man that rides that thing on the ice, but intodays world its not practical...