Something tells me that these are only very abstractly “made from gum” given the kind of chemical processing that is likely done with them.
Well, I guess that’s what you get when you source your materials in the most energy intensive, expensive way possible.
It feels very much like a meaningless stunt. I’m reminded of the sportswear that Adidas (et al) is making with recycled ocean plastic. What I’ve read about ocean plastic is that it’s not very suitable for recycling because of exposure to the elements. Worse, fibers shed from synthetic clothing during washes make up a substantial portion of the plastic in the environment (something like a third overall and more than 70% in waterways and lakes). So that particular project is also rather ironic…