People freaked out the same way with Inception. When I finally saw it I was pretty much on board for most of the film with what was going on. I didn't really need to watch it again to understand what had happened. I would imagine with Interstellar it was people simply having a hard time understanding the scale of space and how gravity is related to time dilation.
Anyway it feels like this thread is starting to take a shit on Interstellar for really contrived reasons. Get better TV's and speakers people!