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.
https://web.archive.org/save/https%3A%2F%2Fold.reddit.com%2Fr%2Fhelp%2Fcomments%2F135tly1%2Fhelpdid_reddit_just_destroy_mobile_browser_access%2Fjim40zg%2F
I'm saving my popcorn for when they take over all the shutdown subs and kick out all their mods.
Yeah, I read this insane "well, Reddit admins will just reopen all the closed subs and things will just keep going like before." And I just can't stop thinking about what a shit show some of those big (and all ready quite toxic) will become. You can't just swap out a group of people to moderate million+ subreddits. It's all just toxic, racist memes all the way from now on.
And tons of nice niche subs will also go down in flames. Kinda sad, tbh.