I think that it would be foolish for any software engineer to completely dismiss any technology. There is a time and place for any tool, and it is a job of a competent engineer to determine what the appropriate combination of these is that would solve a certain problem within specific constraints.

That said, memory safety is one criterion out of many that could be used to make that decision. For a large number of software projects, memory safety simply isn't a major concern. Ease of use, iteration speed, developer familiarity, availability of specific libraries, and so on, are often equal or greater concerns than memory safety.

So, sure, if you're writing a kernel, operating system, or a mission-critical piece of software, then Rust might be worth considering. Otherwise, you might be better served by other languages.