Believe it or not, I do know how to laugh!
Of course you do, I'm just pointing out what I've observed and felt, no offence intended.
I can see how people big into Haruhi's lore would like the last section of the movie, but I was never much into that. It just felt like the main relational conflict of the film had reached a resolution, but the denouement had to be dragged out so it could play at Back to the Future II.
Yea, in hindsight I can easily imagine it being a drag to someone not interested in the lore.