Generally speaking, toy examples can always be made to look simple. In reality it often means the “hard part” was moved into the shadows, not actually solved.

Graphical programming like LabVIEW looks very appealing. The product demo practically sells itself. Sure, it fits well for a very narrow class of use cases. But even fairly simple things in a textual language quickly become an unwieldy mess. (Try factoring an integer in it…)

There are formal models for distributed systems often solve the “easy” problems that didn’t need solving while making various practical concerns harder/impossible such as timeouts or node failure.