Browsers are the antithesis of the "unix philosophy". They do everything from cryptography to typography to networking to accelerated graphics. And its still not enough for people.
(I don't need to mention that just because you put a thin layer on top of a monstrous browser library that does all of the above, that doesn't make the scope of your program limited, right?)
Actually, I think "the application" is the antithesis of the Unix philosophy. The browser is an example, into which we're pushing more and more stuff. That said, it's certainly a spectrum, and this seems a big improvement over any other browser I've seen. I have some speculations about how to do better still but they're entirely untested...
(I don't need to mention that just because you put a thin layer on top of a monstrous browser library that does all of the above, that doesn't make the scope of your program limited, right?)