Hah, I had no idea, I don't know anything about Ruby except it also suffers from a Gil?

Maybe they're using the other golden rule: All languages starting with a P are old, crusty and should be avoided.

It suffers from a GIL to prevent race conditions in the data structures of the interpreter, which is written in C. C extensions add to the problem. I'm not sure that this kind of languages can be classified as memory safe. Maybe JRuby, which runs on the JVM.

Anyway, even without C extensions a malicious input might trigger a memory related vulnerability in the interpreter. A compiled program written in a memory safe language could suffer from a compiler bug. Did it happen to Go and Rust?

That's why Raku was invented!

Hey now, PureScript is not that old.