For what it's worth: using a tool like pypi-parker technically violates PEP 541[1], since it uploads projects with no functionality
solely to reserve parts of the namespace. You may or may not get away with using it, depending on
how you use it, but PyPI's admins (who I do not speak for) would be within their enumerated rights to ban any account that uses it to squat names.
[1]: https://peps.python.org/pep-0541/#invalid-projects