For the record: I've followed Anonymous fairly closely, out of a kind of morbid fascination. I've got massive issues with vigilanteism, which is what it is at the core, but I find seeing how it actually works in the modern age interesting. That said, it appears to me that there is an informal core network of members, who may come and go depending on interest in an individual op. Outside of that, there appear to be minor associates and hangers-on, and complete outsiders who just want to use the name. (This is not a statement of definitive fact, just my analysis based on what I've seen them produce and do.)
Last Resort looks like the last category. There were no announcements at all via the usual newsfeeds/sites (usually they're timed more or less simultaneously with the video and Twitter debuts), and frankly, the video looks only superficially and sounds nothing at all like previous Anon media. I'm calling this a definite fake.
As for their own views of themselves... I think Oniya has hit the nail on the head, really. Personally, I'd have way less issue with them if they stopped treating police like the plague.