I'm all for Rusting more-or-less all the things, but Rust isn't actually magic or anything. Things aren't automatically better just because Rust. And as someone who keeps at least modest track of CVEs and such, these utilities aren't exactly throwing CVEs out left right front and center. I don't like the amount of C in the world but being run billions of times a day in every conceivable environment is itself a really, really good test. We well know from history, still not always perfect, but honestly these aren't the things that need a priority Rusting; it's the code that doesn't fit that description that really needs it.
By all means, rewrite it in Rust, but don't go slamming it in to Ubuntu. Debian unstable. Gentoo. Something other than what I put on my boomer-generation, stereotypical "knows nothing about computers" father-in-law's laptop so I don't have to support him every week.
No
But it's still rolling-only code. And having to change it for every ubuntu release (even if per-release everything is targeted to the static version of rustc in Ubuntu) is silly since cargo editions won't save you. And since anyone actually compiling rust programs will have had to update their rustc constantly they'll have to do some containerization or something to compile the $version-written tool for $ubuntu-release-number.
Rust 1.82 was released in October last year. It looks like this gets bumped periodically, but it isn't pulled to latest and presumably a bugfix release, if they were doing those, wouldn't change MSRV so that seems basically fine?