Earlier today I read an article by @kralizec, https://steemit.com/science/@kralizec/light-powered-hybrid-nano-organisms-making-plastic-and-fuels. In a way, this kind of interaction between living and non living elements creates another kind of evolution that would probably have astonished Darwin, wouldn't it? Perhaps even alarm him. I think you're right. As soon as we think we've settled upon a definition of life, the goal post moves.