> I'm not surprised throwaway mobile apps do benefit, while relatively mature python packages do not.

Right.

I don't think you even need cynicism or whatever you felt you were having impolite thoughts about:

I'd expect the top mature libraries to be the most resistant to AI tool use for various reasons. They already have established processes, they don't accept drive-by PR spam, the developers working on them might be the least likely to be early adopters, and -- perhaps most importantly -- the todo list of those projects might need the most human comms, like directional planning rather than the sort of yolo feature impl you can do in a one-man greenfield.

All to further bury signals you might find elsewhere in broader ecosystems.