For what it counts,
I don't consider weight reduction, or using a small pack to be elitist in any way. In fact, the whole movement in reducing weight in part started as a way to reduce costs. Of course you can spend tons of money of products designed to cut weight, but that is true with everything. How many of us are sporting $500 canvas pack, $200 canvas tarps, and $150 merino wool t-shirts in the name of bushcraft? Bushcraft can be done on the cheap, or it can be done with lost of money. Same goes for saving weight.
I originally didn't post in this thread because I didn't think you would take the comment seriously, until I saw your post in the other thread. I'm with you on this one. I have no idea how people manage to fill such huge packs. Well, I do, I just try not to do it myself. I also don't believe that being able to carry your gear on your back is in any way elitist. Here is a list of gear one can put together for about $400 that will weigh about 13 lb and fit without a problem in a 45L pack:
http://woodtrekker.blogspot.com/2013/10/beginners-guide-to-affordable-bushcraft.html