I like the practicality of this. I know everyone (particularly here) is excited about new languages, and some of them are great. I'm learning some myself.

But there's billions (?) of lines of existing C++. For those projects, there are two options: (1) improve compiler static analysis, possibly incrementally update it with something like 'profiles'. (2) Do nothing.

There is no "rewrite it in another language" option. Those are your choices, and even (1) is a stretch.

So I do think we should be moving forward on both fronts - improve C++ so that existing code can be made safer, as well as push the envelope with newer safer languages.