I wouldn't say they got it wrong exactly. Uninhabited types aren't equivalent to unit types, but in terms of Rust they're both classified as zero-size, and I su

I wouldn't say they got it wrong exactly. Uninhabited types aren't equivalent to unit types, but in terms of Rust they're both classified as zero-size, and I suspect they were just pointing out that Rust has optimized and special-cased zero-sized types accordingly since time immemorial.