So what is their claim then? They think that if you optimize your consumption based on "environmentally friendly" supply chains and aesthetics, even if those optimizations are actually unhealthy (ie. replacing cocoa with sunflower seeds) and/or useless, we'll solve climate change?

This is all about aesthetics for addicted consumers. What would actually be much better, all around, is if our culture started promoting buying high quality cocoa powder and making our own cookies instead of buying highly processed garbage that pretends to be good for the environment.