Yes, but apparently private apps & usage is still free (for now). You just can’t create an app id for use by thousands of users. From https://www.redditinc.com/blog/2023apiupdates :
Our Reddit Data API will still be open for reasonable and appropriate use cases and accessible via our Developer Platform, which is designed to help developers improve the core Reddit experience.
Yes, but apparently private apps & usage is still free (for now). You just can’t create an app id for use by thousands of users. From https://www.redditinc.com/blog/2023apiupdates :