An alternative that has worked for me in the summer is making an alcohol stove from a spam can and a hole punch. You can look on YouTube there’s a bunch of videos on there. Hard to get any more light weight than that, can boil water in 5 min with good conditions. You can also put one of the little esbit or similar cubes if it’s windy. They are fun to play around with or ultralight backpacking but as guys have mentioned, it’s hard to go away from the convenience and reliability of the standard propane stoves.