Take _Star Wars_ for example. You don't need to know how the Force works. There's no suspension of disbelief because you've bought into the genre and its tropes. The Force is everywhere, Luke is atuned to it. We don't need to know anything else mechanixally. Then they rolled up with midichlorians and reduced the whole thing to jibberish.

_Interstellar_ sets a hard sci-fi expectation with a visually accurate black hole before losing the train of thought. Imagine if _Lord of the Rings_ spent 20 minutes discussing how the plate tectonics of Middle Earth gave rise to Mount Doom before veering off into the history of the eagles. It gives your audience whiplash.