I don't think it's an attempt to justify things as much as an attempt to question whether the author is making a real point. He suggests that we should "adopt flexible stances, mixing traditions", rather than "adopting rigid and extreme positions", but almost everyone honestly believes this is what they're doing. (I would argue that "rigid and extreme positions" is just what it looks like from the outside when someone's mixing in a tradition you don't understand.)

I could imagine someone saying that we should strive to live off of vibes, never having or acting on ideas about how the world should be, but he doesn't seem to be arguing that.