Steve, you say: "But I need to be convinced that you can reasonably save 24 ounces merely by switching to tenkara." Why? Because your traditional setup was lighter? The point isn't just to save weight... and no, you don't need to be convinced that someone CAN save 24 ounces on a fly setup... you need to accept that some people carry that much fishing gear than you, whether you do so or not. And more importantly, I'd like to point out that people regularly spend hundreds of dollars to shave 4-8 ounces off their pack... so your point just doesn't really matter here, since most people on this site are looking to knock weight off their packs, in ANY way... this is a great place to at least NOT add weight to your pack, FYI.
It sounds like you are just saying you like traditional fly fishing more, which is fine, but you shouldn't take an angle of argument that second guesses the tenkara setup's weight-saving value, because your argument doesn't fit here. Let me explain why - you are comparing a 4 weight western fly rod setup to a tenkara setup. Your rod is shorter, potentially lighter weight, and arguably won't catch fish as big as a longer and much more bendy tenkara rod. Your setup is heavier because you are carrying an arguably useles metal block - the reel. I know from experience because I fish both styles too. Frankly I think you are just being defensive of your preference, which isn't really helpful in the forums. People know they can buy a lightweight kit and fish traditionally. You continue to ignore the minimalist benefits, as well as the benefits in fishing. As someone who regularly fishes both tenkara and traditional fly setups, I get 2 hits on my tenkara setup to every one hit on the western setup. Sure, I'm no pro-guide, but I've been fishing for 15 years and learning every day. Tenkara is just a better way to catch fish. It may not be everyone's favorite way, and it may not be the most popular, but it is absolutely not arguable on the rate of catching fish for an average angler. I'm glad you do like your western setup, but try catching an 18 inch fighting trout on your 4 weight setup in a small mountain river... a 12-13 foot tenkara rod would make that way easier. The tenkara rods catch bigger fish compared to their weight than traditional rods do, unless you're fishing a HUGE river and can run however much line off your reel as you see fit.