Are exotic speaker cabinet materials overrated?

Two Links from the same organisation, with the first being an interview with a individual who through their career known a lot about materials.

Interesting how the RIWDB ( Panzerholz - Tankwood) is compared to Carbon Fibre Composite Forms. 

 Interesting how the RIDWB ( Panzerholz - Tankwood) is claimed to have 1 Billion transfer paths for generated energies.

I see in the second link, there are what looks to be 32mm Thick P'holz Boards stored for use. I have only seen this in the flesh once, used as TT's Plinth Material. The TT's owner had exchanged P'holz from 25mm to 32mm and was confident the changes detected withing the End Sound were a betterment.   

https://www.monoandstereo.com/interview-with-rainer-weber-of-kaiser-acoustics/

https://www.monoandstereo.com/kaiser-acoustic-factory-visit-report/

Note: Any RIDWB (Resin Impregnated Densified Wood Board ) from Brands who produce the Material when compared as equal materials. Will produce almost identical intrinsic Damping / Dissipation properties. There are also those using the Veneer at 0.8mm prior to compression, which will increase the number of Veneers in a Board of a given thickness, hence, increasing the paths for managing energies that are unavoidable but also unwanted.

@faustuss Totally. It's why 99% of the time I stay off forums. I do enjoy helping new people after they get shot down by so called experts who make ridiculous proclamations that disparage their buying decisions.

@foggyus91 You're right.

Regarding concrete - concrete is a weak material, which is why it needs reinforcement if used for anything other than compression loads. It's also heavy, and expensive and time consuming to produce to a finish that would be acceptable for a domestic product. It's not very well damped either. So not a good choice for loudspeaker cabinets. 

@yoyoyaya I agree. You can bust it into pieces during delivery, installation or repositioning. But you can easily address dampening with fillers.

@pindac B&W uses the later. Those who don't use boosted EQ/tone control won't have issue. If you do, it sounds great up to a point where you need to upsize to a larger model.

@gdaddy1 interesting post re: wood layers and Glop. pray tell, what ratio of clear silicone to sand did you use? And how thick of a layer did you put on the inside?