Had the Internet actually been around, I wonder what the conversation would have been when compound bows came out vs traditional? Scopes vs iron sights?
I don't have one of these bikes and will probably never buy one, not at $5000.00. But in my opinion I would ask what harm do they do compared to a regular Mtn bike? They obviously don't have the torque to tear up ground like dumping the clutch on a dirt bike. If it can help a hunter access land more easily, and legally, just the same as a regular bike than I would say OK.
Obviously wilderness areas are off limits, but I always thought it'd be interesting to try antelope hunting off a mountain bike. I figure there would be enough cattle trails and two tracks a person could cover some ground. Again, providing it was legal to do so.