Ummmm... take everything off and put it on a diamond frame bike, and I can tell you I have seen many people touring with a similar amount.
Let's say the side pods next to the seat go on the front rack, the panniers and rack top bag stay on the rear, and the little red one under the rack-top back becomes the handlebar bag. The blue bar bag on the left-hand one stays as a bar bag.
I think they look deceptively overloaded because everything is concentrated on the rear. But like I say, the load likely isn't much different to what I have seen many times before. If I'm even honest, I have had a similar load, too (although not in recent adventures).
What I find more interesting is the front suspension on the recumbents.