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.
It’s a dumb move but it’s in line with their goals. Giving third party Apps the “Fuck you quote.” price is also dumb when they could have offered a reasonable price and got some cash out of it.
Regardless, this interaction is from a month ago, so if anything it’s not reacting to the current situation but was a clue as to what they were and already are planning.