I don't think I agree with this framing because "definition" implies comprehensiveness in a way that "here are some properties which may not cover everything that's relevant" does not. Your "definition" implicitly ignores the safety mechanism that Rust has and Zig lacks, which does a lot of rhetorical work into making it seem like the only difference is in "flavor" rather than "substance". My argument that there is a meaningful difference in substance, just not the one that the parent comment (and plenty of others) expected.