Comment by tialaramex

I would guess the intent is that it won the argument. In 2015 if you'd asked WG21 why you can't have this model of safety for C++ you'd be told it's a pipe dream and they only standardize things which can be realised.

Because we won the argument now that doesn't work. When you say "it's a pipe dream" you're either ignorant or a liar, so, in 2025 WG21 didn't say this can't be realised - when they were shown proposals to do exactly this - they said well, we think we can achieve the same goals via a different route which suits us better, we just need more time.

Whether you believe that or not is a different conversation, but Rust won the argument.