Yeah, the vast majority of users don’t contribute at all. Not post, not comment, not even upvote. They come only to consume.

Then you get the segment of people who contribute a bit, but not so much, and then you have the golden 1% of powerusers that are active.

That’s why, yes, 3 party app users are just a small chunk off the greater Reddit pie - they are more likely to belong to the segment of Reddit users that actually create content for the side. Posting, commenting, up and downvoting, actively engaging.