They instituted OSFA pricing, when prior it was free.
Even that, while technically true doesn't paint the full picture. Let me try:
They cut off the API to everyone: 3rd-party apps, disabled users, mods who use tools to moderate (that don't exist on Reddit). Then, they priced access to the that API so high that basically no 3rd-party could afford it.
This is cutting off the API to practically everyone (in practice, if not in action) ahead of their planned IPO. And because they want to charge for the LLM AI's that use Reddit content for training...