Even if this were true, 3rd party moderator tools are going away as well, and that affects everyone. I've heard it said that it's basically impossible to moderate a big subreddit without 3rd party tools. If so, those communities will rot, and Reddit is unlikely to respond fast enough with improved tools.
The real migration will come later, and more gradually. This was really more of a good trial run.
Could you provide the source for "The API/3PA changes affect like 5-10% of users"?
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