“The EcoFoils are hollow balsa blanks, covered in organic cotton cloth and standard resin. The BioFoils are biofoam blanks (20 percent bio-derived), covered with organic hemp cloth and standard resin.”

Standard resin means polyester resin which is very toxic to both the people using it and the environment and there is nothing natural about it. It also has nowhere near the durability of epoxy resins so it doesn’t last long either. It is cheap though.
Trying to pass off these Bio blanks as environmentally friendly alternative is also very dishonest. The vast majority of the blank is still polyurethane which produces very high greenhouse gas emissions when produced and leaches the chemicals it was made of into the soil when it is disposed of. the environmental hazards of making this foam are what caused Clark foam to shut down a couple of years ago. 20% of a blank is almost nothing and that 20% is derived from cane sugar. There is a ton of material out there documenting the environmental and social issues associated with sugar cane production.
It’s too bad he can’t just market his boards based on their performance or look.