Hello and welcome. The system shown in the video is ok but much heavier and bulkier than it needs to be. The popular options among members here are equally simple and much lighter. I'm a proponent of a saying around here that states HYOH-Hang Your Own Hang. If that system will work for you, that's great but if you want or need to shave weight if that is a concern for you then peruse the suspension forum for other ideas. As swingit mentioned, whoopie slings are a popular way to go but as I said before, HYOH. Have fun!
Don't let life get in the way of living.