Yes
Claude Opus handily navigates around it, and produces working bug fixes with minimal guidance
eterm on Hacker News
In the thread “Tell HN: I write and ship code ~20–50x faster than I did 5 years ago”, replying to this comment
Helped: Domain knowledge to correct direction and pick good ideas from bad.
Got in the way: Requires navigation and babysitting; cannot run in YOLO mode.
… That's as legacy as it gets, 20+ year old code base with several "strata" of different technologies and approaches. Claude Opus handily navigates around it, and produces working bug fixes with minimal guidance. I'm not going to claim it's 20x or 50x yet, there's still navigation and babysitting involved, but it's definitely capable of working on complex problems, I just don't trust it to run it in YOLO mode. …