Bingowings said:

Spoilers within but here's a Guardian article regarding some of the recent complaints that the show is now too complicated (for adults presumably going by the Douglas Adams equation).

Actually, I think it just proves the age-old adage that no matter what you do, you aren't going to please everyone. Speaking strictly for myself, I appreciate having to think about things, rather than just sitting in front of the TV, drooling on myself, and saying "duhhh, shiny object, neat-o!" in a Daria-esque monotone.