The cloudflare bug was the equivalent of an uncaught exception caused by a malformed config file. There's no recovery from a malformed config file - the software couldn't possibly have done its job. What's salient is that they were using an alternative to exceptions, because people were told exceptions were error-prone, and using this thing instead would make it easier to write bug-free code. But don't do the equivalent of not catching them!

And then, it turned out to not really be any better than exceptions.

Most Rust evangelism is like this. "In Rust you do X and this makes your code have fewer bugs!" Well no it doesn't. Manually propagating exceptions still makes the program crash and requires more typing, and doesn't emit a stack trace.