> Go is a better choice where performance is important, but not so important that you'd forgo the simplicity of Go for Rust's more complex development style (borrow checker, etc?).
I understand why someone might feel this way, but I think it may misunderstand/misinterpret a few things.
First, a more complex development style is not a chronic condition, because you become proficient in the language you work in. For instance re: the borrow checker, you begin to understand what it wants you to do, and why. Rust may be harder to pick up, but, once you do, it's just as easy to build a CLI tool in Rust.
Second, obviously, it depends on the type of CLI tool you're writing. Maybe the CLI tools Meta are writing look less like Python scripts, and more like Valgrind or tcpdump.
Third, not to disparage golang in any way, but golang's simplicity is something of an illusion. Because all "simplicity" is an illusion. It breaks down quickly at the edges. As someone else noted, you should take a look at "I want off Mr. Golang's Wild Ride"[0] but also perhaps "Simple Made Easy"[1].
[0]: https://fasterthanli.me/articles/i-want-off-mr-golangs-wild-...
[1]: https://www.youtube.com/watch?v=SxdOUGdseq4
