That’s too bad as this caused problems for a number of people. I am aware that the PyPI team is severely understaffed at best, but getting hit by this is still annoying. As far as I know even the deprecation was not communicated widely, sending mail to maintainers of packages that use the feature would have been nice.
I’m currently stuck with old documentation on the site that has Google ranking, and no way to change anything about that. A way to replace the documentation by a redirect would have been nice (and was something that I wanted to do anyways, I’ve moved documentation to Read the Docs because that way the website gets updated automatically leaving me more time to do useful work)