> This is such a strange take on t-strings

I understand why this seems strange at first!

As Paul mentioned, we spent quite a lot of time considering these issues as PEP 750 came together. In the end, we concluded (a) the PEP leaves open quite a few potential approaches for tools to adopt (not just the one you suggest, as others here have pointed out), and (b) it's ultimately something that the broader tooling community needs to rally around and should probably be out of scope for the PEP itself.

So, with that background in mind, I am indeed hopeful we'll see the ecosystem adapt! :-)