The Link gives a good description of how the Densified Wood Board is produced, it and how the Bedroc is produced, as this is very likely the source of the material.
All Resin Impregnated Densified Wood Board is produced to a range of Industry Standards to which IEC 61061 for electrical applications is the most important control measure.
Failure of this Material Type in the applications it is fundamentally designed to be used in, results in the potential for loss of life. Catastrophic Material Failure as described does not occur.
Resin Impregnated Densified Wood Board, sitting in a space such as a Home does not delaminate, it has a 100 Year Life Span when submerged in water as a Prop for a underground positioned Generator or when used submerged in Oil in a Transformer.
https://www.pagedplywood.com/wp-content/uploads/2020/08/PAGED-ELKON-2020-.pdf
There is not an owner of anything made from Densified Wood that need concern themselves about Quality, the measures in place due to adhering to Industry Codes produce product that are non-degenerating.
I have seen P'holz skimmed down to mm's (1/8in) in thickness to make a Headshell of a particular Gram Weight, the Headshells of which Six Units were made remains totally stable, I am the owner of one as are a few friends, mine will be trusted for the role until I am no longer able to use it. Additionally, I have seen parts produced from P'holz that are belonging to a Tonearm that are usually the role of metal, the P'holz Substitute has been such a success it has maintained the substitute role to date.
Commercial Entities are making available P'holz Tonearm Wands, P'holz Headshells and P'holz Cartridge Bodies, purchases are made as the Companies are known to be reputable in dealing with Analogue Source Equipment. Their Densified Wood Products are not delaminating of deforming in their shape.