For people looking for more context on why C++ Profiles are not going to work, here is a good analysis:
https://www.circle-lang.org/draft-profiles.html#c-is-under-specified
C++ profiles, as designed, cannot achieve memory safety. The only way I see it “succeed” is if they try and move the goalposts by attempting to redefine the term “memory safety” to fit what they can deliver.
From my perspective that’s a dead-end. The only realistic mid/long-term solution is replacing C++. The only realistic short/mid-term solution is sandboxing C++.