As a C programmer who fiddles with low level stuff I wonder why people get exciting about such trivial thing.

Don't get me wrong. Rust is an interesting language. The thing described in this post is well within its capability, i.e. IMO there isn't really anything that worths bragging about. Such trivial thing neither demonstrates the real potential of Rust, nor answers important questions from real world engineering perspective.

I'm all for having better tool to write low level stuff. I have dabbled with Rust and the experience was eye-opening. I think Rust still have a lot to catch up though.