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.
The whole blackout thing is super interesting, and to my knowledge it’s the biggest protest of it’s kind since Reddit hit the mainstream. I can’t imagine it kills Reddit soon though. It’s just the start of a brain-drain that will make Reddit lose relevancy over the next 5 to 10 years, and they’ll wonder where they went wrong. Even I’ll probably keep my alt account there, but the days of actually contributing will end for many.
But also fuck spez ;)