I've been an engineer for almost 30 years (@ MS & Apple). I've been using Claude to perform code reviews for several of my macOS apps (that I wrote without AI).

A few weeks ago, its performance was impressive and helpful.

In the last week, it has been unusable. It is now getting confused, suggests architecture changes that make absolutely no sense, and has even started ignoring my stop hooks (and then arguing with me that they "aren't necessary").