If you're rewriting into a language like C++, this may very well be true. However rewriting in Rust in my experience yields far fewer bugs, and the ones that d

If you're rewriting into a language like C++, this may very well be true. However rewriting in Rust in my experience yields far fewer bugs, and the ones that do surface are usually simple to fix. If a project truly is "stable" - there's very little effort involved in maintaining it, then yeah, it doesn't make sense to rewrite it. But if it's plagued by bugs and is painful to maintain, you'd be much better off rewriting it in Rust, assuming you're familiar with the existing project's limitations.