Plot wise for this episode, I thought it was pretty ridiculous. But as with some of the other filler episodes, it's meant to be light hearted and funny, while entertaining to the mass audience as well. I think it's served that purpose, while people who are looking forward to the time jump are going to get more frustrated. For me, I'd really hope DB are just kidding around with us, but even if there are going to be more fillers it's not the end of Naruto.