As someone who fits this mould, for me, it's not exactly that. Yes, in my professional life, people know me for my Rails work, but I learned C at a very young age, and while my systems-level stuff was a bit out of practice, for me, Rust is a _return_ to the kind of stuff I used to do earlier in life.

Oh, and I'm not sure "majority" is really true. Yeah, maybe some of us have disproportionate impact, but a very large number of people in Rust-land really know their systems stuff. I am humbled to work alongside such talented people.