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

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