I second that Lee .
We could also flip the whole discussion around .
If one doesnt hear what phenolic resin composite materials do with the decay of tones (for example a piano) , or bass definition due to no energy storage in the cabinet , there is something wrong with ones ears .
I hear that with some, not all. I heard it with my Magico Q3s too. My point has always been that I also hear it with some nice vintage speakers with relative loose and resonating plywood cabinet speakers too, sometimes even to a greater degree.
I have come to learn that the positive qualities you describe are a function of a combination of factors, everything that goes into assembling a successful audio system, beginning with information retrieval. The amps have a lot to do with it also. Speakers are much more than just their cabinets. The entire design is what we hear. Marketing prose has been very good at focusing attention on cabinet construction. It matters also.
From a visual / quality point of view the material is much more luxurious looking also
Mine look like absolutely new despite being manufactured almost 8 years ago due to the extremely hard material underneath the paint layer .
I love the look of the Magico aluminum, birch ply, and carbon sided boxes. They retained their luxurious looks long after they were built. And I recently saw some gorgeous wooden speakers 40-70 years old. They still look like gorgeous furniture. Aesthetics are very important.