Nope. Network effect happens if there's a network. For that you need an adequate amount of eyes per post so that people can start commenting and discussing stuff with one another.

Dump in hundreds of copy-posted memes without enlarging the user base and it does exactly the opposite of the network effect: With much more posts per viewer, the viewers are spread thin over the posts which means there are never enough people on one post to actually start a meaningful discussion in the comments.