Backpacking, bikepacking or bike touring light is not hobo lifestyle.
I did the transam trail with just a handlebar bag and Revelate versace. My new setup that I am experimenting with is the Taifin. My tent, bag, and pad weigh under 4 pounds and have been used as low as 17F but 25F is a comfortable limit. The tent is obviously Cuban fibre and the bag is down. My luxury is a full size air mattress, not the narrow and short one. A full 25 x 72 thermarest with an air pillow. I don't yet have a total weight of my new setup but my backpacking setup for 3 seasons is 8-9 pounds depending on the level of comfort I want. Probably 10-12 pounds plus bike. When the gear is light, the bike and wheels do not need to be so surly and heavy. I have toured with 100 pounds and 30 pounds (total including bike) and for me, lighter is better in so many ways. I also stay periodically in hotels to take a real shower, eat good food and wash kit.