An AI-assisted rewrite can make sense, if you take the time to uphold semantics and code quality, as they suggested. In practice, the first file I looked in had

An AI-assisted rewrite can make sense, if you take the time to uphold semantics and code quality, as they suggested. In practice, the first file I looked in had unsound unsafe – in the Rust sense, that a safe caller could cause UB, not that any callers do so – in fact there are no callers, the functionality was removed from the C++ bindings in a 1400-file changeset but left in the associated Rust module.