Why are there so many wooden speakers?

I have noticed a problem within the speaker industry. 99% of speakers that come onto the marketplace are wooden, i.e MDF.
This is true of old speakers and new speakers. This is true of Dynaudio, B&W, Elac, Kef, revel, PMC, Focal, ATC the list goes on and on. This is a longstanding problem that has been deceiving audiophiles for decades and it requires a solution. 

The problem with a wooden box is that no matter what crossover or drivers you use, it will still sound like a wooden box. 
There is a limit to the sound you can get out of a wooden box so it is not possible to improve the sound just by using different drivers. Despite this, every year or two, the aforementioned companies put new speakers on the market claiming that they sound even better than what came before. In conclusion, we are being misled. 

I have no problem with MDF boxes per se. MDF is a good material to use. But if you want to make an even better speaker then you obviously need to use a better material. You cant use the same material and say you have made a better speaker. Thats false. 

Let's take the B&W 600 series for example. This is a series that has been going on for decades. 

Here is the latest speaker from their current series


There is no mention of what wood is used but I'm pretty sure its MDF. All they talk about is their continuum woofer and dome tweeter that goes up to 38khz. No mention of even improvements to the crossover let alone the cabinet.

I believe that this has gone on for long enough and audiophiles deserve better treatment. I don't know if a class action lawsuit is the answer but something needs to change.
I've figured it out.  Kenjit is actually a closet environmentalist worried about deforestation in the Baltic states.  I mean, all those birch trees being cut down...
The bigger question is , Why are there so few wooden amplifiers? 
… Aren’t violins made of wood? Guitars, pianos, Clarinets, bassoons. Why would it occur to someone to pick on wood as being on unmusical?

Some very special woods too.

Yes that is the problem, they have a sonic signature.

You want nothing in reproduction, just the sound, nothing more, nothing less.

I guess we need testing on these materials speakers are made of.So we can all argue, the other pastime of Audiophiles beside listening to our systems. 
Creating music and music reproduction are very different endeavors with very different criteria for the materials used to accomplish them. Instruments can have a distinct and desirable sonic signature. Hi-fi music reproduction should have as little sound signature as possible.

The material used for hifi speakers is less important than how it’s used (within reason). MDF is a pretty decent affordable material if adequately shaped and braced.  It can be cut, curved, drilled, veneered, and painted,   Concrete and other stone can sound awesome but is pretty impractical to ship, and difficult to work with. Birch ply and other hardwoods can be fine too, but are more prone to resonance and warpage than MDF, and the environmentalists are likely to give you more grief for using it if you choose exotics.  MDF on the outerwalls with pressboard bracing works out pretty nicely IME.

Old pine is great for guitar and organ music production, but not so much for hi-fi music reproduction