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.
Ethics is meaningless when corporations are doing “research” for profit.
I put it in quotes because a lot of the “research” done by companies doesn’t even resemble real scientific research. They use the word to give “we forced a new feature in front of unwilling users, never asked if they liked it, and took them continuing to use the site as liking it” legitimacy when talking to news outlets.