The change isn't about Apollo exclusively, Reddit is going to start charging for their API. Basically all remotely adequate (which Reddit's 1st party tools aren't) moderation tools make extensive use of said API, so Reddit has basically decided "Hey, people who do most of the work necessary to keep our platform afloat for free, mind if you start paying us for the privilege?"
Most communities rely on third party moderation services and tools which will also be impacted by the API changes. Many have said that moderating larger communities will be untenable without them.
