I think Rust is "higher level" than C or Zig in the sense that there are most abstractions than C or Zig. Its not Javascript, but it is possible to program Rust without worrying too much about low level concerns.
is it a typo for more abstractions? or is there some different meaning?
The actual hard part of Rust is dealing with async, especially when building libraries. But thats the cost of a zero-cost async abstraction I suppose.