> Typst is a good example of the readability argument:
I'm afraid the author completely missed the point here. Typst is not more readable than (La)TeX because it's written in Rust, but because its DSL was so designed. It could have been implemented in PHP that the result would be exactly the same.
Same thing with the auto-unroll/SIMD arguments. AFAIK, it's LLVM that's doing the job, there is nothing theoretically preventing a {language} compiler to obtain the same results.
Where Rust shines w.r.t. other similar languages though is that its strict memory model lets developers push further memory/concurrency optimization without sacrificing safety – which she highlights in the GNU/coreutils sort comparison.