Recursion in RPG

I recently read this article:
http://ibmsystemsmag.com/ibmi/developer/rpg/rpgle_recursion/

and was interested in this comment:
"Even though this procedure doesn’t return a value, it’s a good idea to
have a return statement on the end so the program can exit right away after
it reaches the end of MGACCM. Otherwise, it will unwind itself by going
from the Endif line to the end of the procedure for as many records as were
written."

What I've noticed is that each recursive call puts an entry on the call
stack, and at the end it "unwinds" down the call stack until it can exit
the subprocedure. I thought the author's comment above was addressing
that, but it made no impact on my test pgm.

Is that the expected behavior? I'm worried about a long-running job
running into a system limit. Does anyone know?

Thanks,
Phil