As quoted from the linked post.
It looks like you’re part of one of our experiments. The logged-in mobile web experience is currently unavailable for a portion of users. To access the site you can log on via desktop, the mobile apps, or wait for the experiment to conclude.
This is separate from the API issue. This will actually BLOCK you from even viewing reddit on your phone without using the official app.
Archive.org link in case the post is removed.
This is the natural result of having MBAs make any decision
Worst of all, idiotic decisions over nerds. It’s not like a lot of us had servers running anyways. I’m gonna build my own social media, with blackjack and hookers!