Rapidly Degrading Plastic

I have to believe that the video here is BS, and that this plastic compound doesn’t degrade in water in five minutes.  And even if I’m wrong, how useful is the product?

Yes, we do have a problem with the slow degradation of plastics in our environment and the horrible effects this is causing our ecosystems.  The person who introduced me to his work in the space pointed out that, considering that milk loses its freshness in perhaps two weeks, our milk cartons shouldn’t require 500 years to degrade in our landfills (or streams, or wherever they wind up).

Yet the plastic container certainly has to outlast its contents, or we have a real mess.  If a certain plastic dissolved completely and nearly immediately in water, the moisture content in humid air would definitely cause it to fall apart.