@brettcannon thanks for the bug reports.
I can’t reproduce your problem getting to https://bit.ly/pip-ux-studies (which should direct to http://www.ei8fdb.org/thoughts/2020/03/pip-ux-study-recruitment/ ). What browser and so on are you using?
The YouTube metadata and the Twitter post include a more direct link to the migration guide. https://pip.pypa.io does not currently link to a migration guide on the front page – it will once we make another point release and what’s at https://pip.pypa.io/en/latest/ right now shows up at https://pip.pypa.io/en/stable/ . As a kind of workaround, since the “learn more” link points to an explanatory blog post, I’ve added a link to the migration guide at the top of that post. :\