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.
They already crippled the mobile site years ago and put login walls from a long while ago, way before the pandemic. old.reddit.com was the only thing that let me skip it. They deserve to die out.
I was using i.reddit.com during this period. The default mobile website was completely unusable.
Of course, they recently removed i.reddit.com, similar to the third party apps. They achieved the desired user growth and are now transitioning into the aggressive monetization phase.
Good luck making money off of me while I’m using Lemmy instead of Reddit.