I live in WI. About 3 hours from QBP / Surly. I am from around here.
They used to be a thing when fat bikes came on the scene. Now they've fallen so far behind...their fat bikes aren't relative anymore. Like I said...hard pressed to find one around these days.
Nobody wants a heavy steel bike. The rest of the industry passed them up with better bikes.
The fact that you can "leave someone behind" has nothing to do with the bike. It has to do with the physical fitness of the rider on the bike.