For me, anything that isn’t a drop-in replacement for the OG tools isn’t worth the friction. I use ripgrep inside VS Code but vanilla grep on the command line because of years of muscle memory.
That said, I don’t care what language a tool is written in as long as it works. One of my favorite Unix tools is GNU Stow, and it’s written in Perl. Even if these Rust tools were drop-in replacements, I probably wouldn’t bother installing them manually. As a user, the speed improvements and memory safety don’t really matter to me.
There are other languages, like Go, where memory safety is guaranteed as well, and Go’s performance is more than adequate for tooling—with the added benefit of getting more engagement from the community. So I’m not entirely convinced by this “Rust is the savior” narrative.
That said, if macOS or Ubuntu decided to hot-swap the OG tools with Rust alternatives that behave exactly like their predecessors, I probably wouldn’t complain—as long as it doesn’t disrupt my workflow.