I don't think this is productive, since you're so adamant [1] that "big C memory safe programs don't exist." I know for a fact they do. Most of the software you won't ever see. What do you think powers the most critical sytems in, say a fifth gen fighter, or the software that NSA relies on in their routers?
I'll give you a hint. It's neither rust- nor scrum-based. I'd rather change careers or retire than work another day doing scrum standups.