Your example has no overlap with what I was talking about.

What you are saying is about iteration in the language and does not have anything to do with concurrency or architecture.

There is also nothing difficult about avoiding infinite loops in C++. There is a for loop to iterate through a data structure, or you just can just make a macro to iterate a number of times. This is not something that would cause anyone to feel like a big problem has been solved. Recursion for iteration only has advantages when compared to loose while loops. Once more structured iteration came about, using recursion for iteration is just an awkward and overcomplicated hack that obscures something simple.