Exactly! There's nothing really wrong with Rust -- it's a good language -- but people in this space (and in the embedded world in general, myself included) are

Exactly! There's nothing really wrong with Rust -- it's a good language -- but people in this space (and in the embedded world in general, myself included) are skeptical of it simply because reliability is not only something that's inherent to a design, but also something that a) has to be a quality of an implementation, not just of the principles behind it, and b) something that has to be proven in practice, both for the principles and for the implementation. Edit: for what it's worth, I do think it's on the right track on both accounts!