Hello, I am one of the authors of the PEP.
I agree with your sentiment. I still think it might be useful in some contexts and I got some positive reactions here and there, but as you said it does not seem to provide a lot of added value.

On Fri, 15 Mar 2019 at 21:50, Brett Cannon <brett@python.org> wrote:
The idea never seemed to gain any traction over its near 5 years in existence as a PEP.
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