True that. Glass top? I can't see it sitting down and it's just decoration (an expensive, fragile one). The curved cabinet? Well the interior of the speaker is all hard angles. I know a curved face can help with diffraction, but I don't know if curved sides serve any purpose beyond aesthetics.
The "bug" shape was a reference to Canton Vento speakers and an idiosyncrasy of translation from German (I presume, because I don't see too much bug in the shape). In the case of the Cantons, the interior follows the same shape as the exterior. There are six laminations of wood (like plywood) that get steamed (to bend easily), pressed, and glued together in order to make for a very rigid shape (you might imagine taking 6 cards from a deck of cards and gluing them together while holding a bend in the cards until the glue sets - once the glue has set you cannot straighten the cards ... short of a failure of the glue (or destruction of the cards)!
But my point is that, in the case of the Canton Vento, the curve on the outside is the same as the interior.
I know a curved face can help with diffraction, but I don't know if curved sides serve any purpose beyond aesthetics.
The biggest audible benefit of curved surfaces (any surface, not face in particular) for a speaker cabinet is a curved surface allows much less resonance as compared to a flat panel.
Nonetheless, your point is valid. I believe a box made from flat stock, IF properly designed with appropriate bracing, can be the audible equivalent of a (much more expensive to produce) curved box. So while the curved design does offer a audible benefit over a non-braced flat box, it is often chosen for an up scale aesthetic since bracing is less expensive!
Most of a speaker's cost is the cabinet. I look at a lot of these "furniture grade curved handcrafted Corinthian veneer" enclosures and wish they'd just put the same drivers in a big ugly box that met the T/S parameters.
Would cost probably 40-60% less in many cases.
Canton did exactly that with their A45 (45th Anniversary model) speakers. They took their Reference drivers and put them in a box with flat panels (and proper bracing) to come up with a less expensive speaker that challenges the best speakers they make. Interestingly, I believe (in Europe) that they only sell the A45 series direct from Canton!