I think the idea could be targeted at a bike you use to tour for hours and then have the capacity to off-road. To get a bike to do all the things a lighter dirt bike to do and be strong all day on the highway is not easy according to the all of the comments I've read about all the bikes that are adventure bikes but seem not to perform in the dirt as well as the expensive, top of the food chain bikes. I've never seen those bikes off road on many of the trails I've off-roaded on. These aren't tough trails at all.
At the end of the day I'm looking for the adventure bike that I'd see out in the desert, off road at a places like Split Mountain or the many canyon and desert trails we have here. I've never seen an adventure bike out there. I've seen plenty of dirt bikes and even SUV's/4x4's but never an adventure bike.
That doesn't mean no one does ride an adventure bike in these areas. It does seem like it would be rare since I haven't seen one in 25 years of being on those trails.
Give me the Suzuki V-Strom 650XT. I can go highway all day very cheap on fuel with great range and if I go off road It'll be the first adventure bike I see on any of these trails I've never seen an adventure bike on.
I can hear the ,"Yeah but" Yeah but nothing! There is always less fork travel, less this, less that. No matter how much money people put into off-roading you see them upside down on a trail and I guess that might be the adventure they were looking for. Does this negate the better technology? Not by a long shot. Someone with the capability will use it, but I probably won't use the extra fork travel. I would like the other extras like tank range, economy, serviceability, etc.