A major global internet outage can certainly considered a "clear signal". Still not sure this was a good thing though.
And the Rust wasn't the root cause but corrupt configs were being erroneusly duplicated.
In any case, I largely tend to agree with you that this is better in most scenarios (not for the cloudflare incident though). But a segfault in C for a null pointer dereference would have exactly the same result, which is why null pointer dereferences are a terribly example if you want to show the advantages of Rust.
The only example I know where I think Rust clearly has a real advantage are lifetimes.