So they replace the substrate with wood ... instead of silica ... the argument being that wood is plentiful and biodegradable and biologically safe ...
Except ... Silica is more plentiful and more biologically safe since its essentially biologically inert.
As an advantage, silica is NOT biodegradable, because I want my chips to last, not fall apart over the winter when it sheds its leaves.
Silica is NOT the issue for the environment in CPUs, its the production materials and doping agents that are horrible on living things and hard to dispose of.
So congrats ... you solved a problem ... wait, no, you didn't really do anything productive. Not seeing any redeeming quality about a chip produced this way and seeing plenty of down sides.
Whats next, you're going to try and convince me that the aircraft carrier made of sawdust and ice they tried to construct during WWII really was a brilliant plant for a warship sailing in the south pacific?