This could be true, from a developer's perspective. But the OP was in the spirit of expanding one's knowledge and understanding. But even if a single-interface

This could be true, from a developer's perspective. But the OP was in the spirit of expanding one's knowledge and understanding. But even if a single-interface, fully-managed container orchestration service is available to all, the value of understanding how the underlying systems actually function will not cease to exist. Anyone building moderately complex systems will still want to know about OS, networks, storage systems, access control, and all the rest, because those areas of expertise are applicable and useful across the stack.