When you see a “Show HN”, the odds are very high that it is written in an ergonomic language such as Python, JS, Go, or Rust, rather than C or C++. Rust is the only one of these that has native performance, so I think this is useful information.
Meanwhile, in the comments below:
> just having it open and doing nothing with it, it has extremely high cpu usage
For software that isn't in the package repository of your distro written in Rust (or Go or any other language with something similar to cargo) means I can clone the repository, run a build command and it'll likely compile easily and successfully. As a user this is much better than hunting down dev package names and versions for a C or C++ source.