Are you counting the fakes and the bots?

Moreover, as sibling pointed out, content creator != visitor.

If Reddit was a representative sample of reality, all governments in the West would have been ran by gay race Communists.

They seem to count unregistered users in the D/W/MAU, but even so the producer / consumer of content ratio across social media still stands. What you read is a subsection of all visitors to Reddit, which follows the power law.