September 16, 2020 12:24 AM, "Guido van Rossum" <guido@python.org> wrote:
This may actually address the worry that was expressed that libraries will become too dependent on macros, by making it painful to maintain a macro processor across many versions. It will serve as a natural deterrent for libraries desiring stability.

This exactly addresses the worry that I have in a much better way that the command line flag that was mentioned. As long as it is inconvenient enough to prevent it from being THE WAY(tm) to code in Python, I have no other objections.

--Edwin