It'd be nicer if there was some way of selection which language is shown on the left side. Expecting readers to understand both C++ and Kotlin and Java and Javascript will be a stretch for most.
(They seemingly don't use more apt comparisons with OCaml and Haskell, for instance, not expecting the reader to know them.)
So yeah there's quite a lot that people wouldn't know.
This guide is not going to magically teach you Rust is there's nothing to compare it to; there are other guides to help those without a background. But it could somehow help people who already have similar concepts in their mind to link them to corresponding concepts in Rust.