It is a bad idea to take Peter Schiff seriously. Not only on bitcoins, but also on money and economics.
He cried wolf so often that even when the wolf was to come, nobody would believe him. According to him, we were supposed to see 5 major crisis in the last 4 years plus major hyperinflation. He is just a media personality, serving as a Cassandra counterpoint to markets eternal optimists. All are opportunists.
Lets focus on those who know what they are talking about when it comes to money and digital world.