True, but if the process discovers that a lot of lives are lost because of the use of unsafe tools, it changes the tools to add safety features (https://en.wikipedia.org/wiki/Chainsaw_safety_features), or ditches them altogether (https://en.wikipedia.org/wiki/Hazard_substitution#Processes_...)

So, yes “rewrite in rust” isn’t the full answer, but that does not imply “don’t write it in C” isn’t part of the answer.