Isn’t this too “blue-sky”? Doesn’t the technology require lots of invention and discovery before it can achieve commercial reality?

Answer: No. Based on decades of electronics assembly manufacturing experience, product configurations are well known, the core processes are well-known, failure modes are well known, fabrication processes and capabilities are well known. Materials and product reliability and QC protocols, etc are well known. Peripheral support resources (cleaning, conditioning, lab analysis, etc.) are available.