> If you do anything I am relying on, I do not want to hear that you use such "easy" language, period. If you are careless enough to rely on people not making mistakes, I do not want to deal with you. And if I am working on ensuring high reliability, I will choose tools that provide as much guarantees as possible, artificial simplicity be damned.

This to me is a bit absurd. First of all, the "easy" language he's referring to here is C, and if I read this correctly it sounds like he's saying any software written in C is not worth using, which is patently absurd.

Regardless of whether that's actually his viewpoint, programs and libraries which are well-written, in any language, are simply tools which one can use without needing to worry about what language they're implemented in or whether or not the author used generics or pointers or whatever. Language matters if you're writing the code, reading it, or linking against it, and otherwise it's not worth worrying about (as a general rule). Of course, if the tool or library in question is slow or resource intensive, this might be due to language choice, but poorly written, buggy, and underfeatured code can be written in any language. Choose the language that suits you, suits your team, and suits your project.