I don't think they were trying to say "No, ruff doesn't work at all", more that "gets you 90% there" might have been an over-exaggeration, or very codebase-spec

I don't think they were trying to say "No, ruff doesn't work at all", more that "gets you 90% there" might have been an over-exaggeration, or very codebase-specific number and really, YMMV.