> Why do they outsource something that is meant to have been written by a human

Says who? The point of the summary is so that I don't have to go look at the diff and figure out what happened.

The point of the summary is also to explain "why" something was done, most Claude-generated PR descriptions I've been seeing go through the "what" and "how" but if the human-in-the-loop didn't care to precisely describe the "why" it is just an English version of the changes made in the code... I can just read the code for that, give me the reasons behind the diff and I'm a happy camper.