No, I'm not concerned with Linux/BSD/macOS performance, it's pretty good (I took Windows out because it does have performance issues [0]!). What I am concerned about is security bugs, memory errors, buffer overflows etc, all of the things Rust attempts to solve [1].

I think for weapons & flight control, ATC systems, we already have Ada that's designed for "can't fail systems".

[0] https://www.blobstreaming.org/former-microsoft-developer-say...

[1] https://www.zdnet.com/article/microsoft-70-percent-of-all-se...