I got it immediately, but it seems some people on the internet got pretty upset. I thought it was a classic meta joke.
There was also a scene where Ron Howard rewinds the show, and it looks like the Netflix mobile UI (complete with 10 second button and volume bar). Also, in the Buster episode he realizes something that had happened earlier, and Ron Howard says "Before you rewind all the way back to the Maeby episode, yes that happened." (Paraphrased to protect spoilers).