> already existed in other languages
This argument is moot. The issue with spans is not that they require cutting edge technology to deliver.
Before commenting, perhaps you should research why even Denis Ritchie himself could not sell his idea to C.
It's funny how every single idea that's rejected is blindly lauded as brilliant but silenced due to some kind of conspiracy, and only the ideas that emerged are somehow bad, unacceptable, or late. Is the point to feel outraged?
Easy, even one of the author's could not change WG14 mind towards security.
Governments,related cybersecurity agencies, and companies are the ones getting outraged when looking at money spent in cyber attacks due to memory corruption issues.