Have you used C++ in the real world ? Dealt with it's insane build systems, build times, obscure semantics, etc. ? Not to mention there's nothing close to a sane package manager.

There's plenty of value of just rehashing the lessons learned in last 20 years of language design to a systems language.

    I don't think language developers are interested in making
    such a language in general...

:P

I'd argue go came from a desire to have a language that was completely uninteresting in terms of 'interesting ideas', and really just exists to Get Stuff Done.

I think more people are interested in that sort of thing than you imagine. Clearly.

Or more precisely, the designer of Jai uses C++ as "C with classes" and then goes from that, which isn't fair. He also misrepresented a few things in regards to Rust, which he doesn't even know, but comments on etc. etc.

  fn foo() {
      unsafe {
          let x = &5; // this is still going to get borrow checked
      }
  }

  fn foo() {
      unsafe {
          let x = *const 5; // this is not going to get borrow checked
      }
  }