Ugh, I really wish this had been written in Go or Rust. Just something that produces a single binary executable and doesn't require you to install a runtime like Node.
Language choice is orthogonal to distribution strategy. You can make single-file builds of JavaScript (or Python or anything) programs! It's just a matter of packaging, and there are packaging solutions for both Bun and Node. Don't blame the technology for people choosing not to use it.