You must not have had very many bad fine dining experiences. I've gone to a number of those, and they don't necessarily end up being silly, it just ends up being, well, the best word I can think of is pointless. It's significantly expensive, and I'm still hungry at the end. I can eat out at a causal restaurant with cocktails for $20. That won't get me very far in fine dining. And, when it comes down to it, the taste isn't "better" enough to warrant it.
As for texture vs. flavor, improper texture and technique will damage the flavor. Think the scales on the fish. Baby food does not taste the same as normal food. Ultimately, it does come down to flavor. Technique helps and hurts, but people will not eat something with good technique but bad taste (food that has gone bad, for example)
Testing Hung's taste buds would not require replicating a dish. And a challenge to showcase beginner technique is practically useless so late into the show. They've already demonstrated they can do knife skill X, they've been tested how many times? That challenge was little more then showing off what that place could do. BFD. Show us something we can use.