The PR touched a lot of internals, including module code and mirrors the fs APIs. So, yes it was big, but the commit history was largely clean and followed a development story, and it was tested. The code quality was decent too. I didn't review all of it because I don't have a personal stake in this though.

I suggest EVERYONE in this thread go read the the GitHub PR in question. There's some good arguments for and against AI, and what it means for FOSS... But good lord you will have to sift through the virtue signalling bullshit and have patience for the constant moving of goalposts