What I love about this is that it showcases how completely opposite Hobbit and Dwarf culture are.
When a hobbit speaks to you directly— in a matter that could be construed as rude, no less— it’s a big deal. A big freakin’ deal. So he can’t even bring himself to expressing his displeasure at having his house hijacked by a bunch of foreign strangers without adding an apologetic disclaimer. This is the face of a hobbit who has been pushed to frustration, and that’s pretty damn rare.
Then Dwarves. They’re tough as nails and hard around the edges. It takes a hell of a lot to offend them, and even more than that to admit your own guff and apologize— so when somebody does apologize, you take it seriously. Even if you weren’t actually listening to whatever preceded that apology. Even if you don’t think it was worth apologizing for. That shit is serious business, and you take it seriously, yo.
This is culture clash at its finest, reduced to two words.
In short: Peter Jackson’s a genius.