In a nutshell Reddit is charging third party apps more to access the backend, and most of those apps say they can't afford it now and will have to shut down. The only thing I've heard of that's affected was the Reddit Enhansement Suite, which when I still used reddit made it a lot more usable. But more to the point a lot of programs that moderators use to help facilitate their censorship are going to shut down. This caused the powermod trannies to lose their shit and start another of their gay protests where they'll sey their subs to private.