Comment by pjmlp

Can vouch for the sentiment, hence why regardless of the ranting, I am quite supportive of whatever helps to improve C and C++ security story.

Also for Rust based rewrites, they could start by bootstraping Rust compiler itself, dependent on C++ to start it.

They don't do it, because even though LLVM and GCC are written in C++, a pure Rust compiler would not scale to the same level of contributions, and existing capabilities.