simple isn't measured in terms of SLoC, it's measured in terms of cognitive complexity

the article itself says, clearly, that the (short) rust program requires knowledge of a significant number of non-trivial language features, as well as the behavioral outcomes of all of their combinatorial interactions -- approximately none of which are relevant to the problem that is being solved by that program!

what I expect is that a language adds as little cognitive complexity (overhead) as absolutely possible, when it is used to express a solution to a given problem