That's the danger of explaining your more out-there elements at the end instead of revealing them all along, I guess. Like for people who stick around, it really works, but for those who grow tired of waiting for answers, they bail. (You know what was a show that did the actually-explaining-things really poorly? THE X-FILES. The writers were clearly flying by the seat of their pants the whole time and didn't have some overall plan, and it showed. I mean, I love the show, but that's because I love the characters so much. And it had tons of MOTW episodes. The mytharc should have been awesome but it never reached the level it should have because there wasn't enough planning in it.)