First, he didn't call the "crash()" function, he called the "unwrap()" function. The fact that they decided to call the crash function "unwrap()" is not the OP's fault, it's the language authors' fault.

Second, you totally missed the OP's point about reliability. If one has to choose between UB and an immediate halt, those are pretty sucky options. And the OP is 100% right about Rust crashing all the time. Nothing insulting about that, just a fact.