I believe the author Mark Finkelstein said that not the Freeper who posted it, and Finkelstein clearly was referring to Stevens. The quote is: "But I don't think anyone believes Stevens was suggesting the internet is actually composed of tubes. Seems that he (Stevens) had the concept of a pipeline in mind, a first-in-first-out protocol."
Now why Finkelstein thinks that Stevens had FIFO in mind is beyond me, he doesn't explain it in the article, but it wasn't the Freeper that said it.