How can you, knowing absolutely nothing else about the use case, suggest a solution? What if they're on an architecture where the libc++ or rust runtime is low

How can you, knowing absolutely nothing else about the use case, suggest a solution? What if they're on an architecture where the libc++ or rust runtime is low quality? What if their application needs to be NUMA aware? There are plenty of reasons not to use C++ or Rust. They are not magic bullets which solve all engineering challenges.