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.
niche hobby subs are absolutely why i suspect i’ll not truly be able to leave, unless they were to migrate to lemmy or somewhere else. though hopefully i’ll be able to move my general browsing here instead, it can be hard to find those same like minded people on a whole new platform :/