This is in response to a couple of points that have been made.
Firstly, dropping 1500$ to get into packrafting is not that much more than some people spend on good backpacking equipment. A nice sleeping back will cost you a couple hundred or more, so will a tent, so will your 'technical' ultralight clothing, so will your cooking set, etc... It's really a matter of perspective. I really don't think packrafting is that different from backpacking in that respect.
Secondly, bikes are a very different issue. You can't (realistically) carry a bike in or on your pack. Nor would you want to actually. While a packraft provides an mode of locomotion on an alternate type of terrain, a bike provides an alternate means of locomotion on the same terrain. Two different issues. Moreover, I don't know of anyone that would do a 1+ week expedition in the wilderness with his bike.
Also of note is the idea that 'bikers tear up the trail'. I've done a lot of biking and hiking in my day and I can attest to the fact that two walking poles and a set of deep lugged vibram soles will do as much or more damage than a carefully used bike.
The point made by Chris is also very valid. Rafts, in their various forms, have always been an integral part of the backpacking experience. Hell, Canada was basically made by rafting and hiking (fur trade, etc...). There are even people that the canoe should replace the maple leaf as the national emblem. So yes, my point of view is that packrafting does have a place in a backpacking magazine. A lesser place than 'pure' backpacking, but still an important one.