https://docs.python.org/3.12/c-api/none.html#c.Py_None currently says that Py_None "needs to be treated just like any other object with respect to reference counts". That's not really true now that we havePEP-683 immortal objects: there is no need to incref/decref it. There are several similar places, e.g.https://docs.python.org/3.12/c-api/slice.html#ellipsis-object andhttps://docs.python.org/3.12/c-api/bool.html#c.Py_False.

The docs should be updated to somehow refer to the fact that these objects are immortal. However, extension authors who want to retain support for 3.11 and lower should continue to refcount None etc. correctly, so we shouldn't completely omit discussion of refcounting.

cc@eduardo-elizondo