I'm not quite sure what is new about any of this? Being practiced in several parts of India for decades if not longer.
What's new, and interesting, is that the conversation is about the practical benefits, over the "ugliness" of the concept. This conversation is framed in a sustainability and environmental context, which in the face of climate change, is timely and relevant.
It's particularly poignant coming out of Italy, a culture where they pride themselves in their passion for design, and form over function, whether it is furniture, fashion, cars, etc.