Two reasons: - If the author already knows some language well, it’s rather inefficient to master another language just to create a new one. - Rust is likely t

Two reasons: - If the author already knows some language well, it’s rather inefficient to master another language just to create a new one. - Rust is likely to be relevant for 11 more years, C is likely to be relevant for 43 more years. Things that have existed for a long time, tend to keep existing longer.