Not everything is served chopped and diced and ground to a paste, Mike.
Although fluted mushrooms are a little retro, there are times where they make sense. For example, the original Hot Brows were garnished with mushrooms, not tomatoes. And given the time and place or their origination, we can safely assume the 'shrooms were fluted. So I do them that way for that dish. Much more visually appealing.
I'm just not as good at it as Kuan.