Yes, you're right, I was being a bit sloppy there. The Uniform Interface (and Layered System) is one of the ways in which HTTP does follow RESTful principles, though, so the thrust is still the same.
Agreed. But I think it's a stretch to conclude that Fielding doesn't think the hypermedia principle is an important distinction between RPC and REST:
From his blog post I linked to earlier, titled REST APIs must be hypertext-driven [0]:
> "I am getting frustrated by the number of people calling any HTTP-based interface a REST API. Today’s example is the SocialSite REST API. That is RPC. It screams RPC. There is so much coupling on display that it should be given an X rating.
"What needs to be done to make the REST architectural style clear on the notion that hypertext is a constraint?"